Why do the creators all wear sackcloth?

I tend to believe that the Planet in AC was a colony of Engineers who de - evolved. They were probably at the same level as Atlantis on earth. They were probably ordered not to think about why there is evidence of space faring all around them and told not to question it. Much like when 22nd century Colonial Marines don't ask why they have to use Laptops from 1986. They were brought up not think or question anything. Maybe The Engineers and the company have more in common than we think.

I believe the inhabitants of the planet have either chosen or have been denied advanced technology. they may have chosen to live in this style of civilisation as the gods have wanted them to stay pure and only the pure get to be chosen for whatever higher power it is they believe in, possibly the engineer we see at the start of Prometheus came from this planet. this may also go a way to explain more as to why humans were chosen for extinction and they were not. the scorpion ship and hanger were only left there to facilitate returning engineers every century or so to check in on their creation

I think that engineers ether evolved from or evolved into humans and the ones in covenant are a missing link in-between. they were alot more human looking than the one in prometheous.

Space Romans 

I think they choose the life-style of appearing low-tech although it does seem like there is a lot of tech going on around them that is not obvious to us and our conception of 'tech'.

It's a grand tradition to eschew technology and live the simple life. We have monks and Buddhists who've been doing that for thousands of years. These Engineers seem to have taken it to a higher level. They're probably more interested in contemplation and reflection than watching DVDs or doing nutsy things like building shopping malls full of designer clothes. As an Engineer I'd be tempted to drop a few ampules myself on our ridiculous culture.

The way they cheered the arrival of the Croissant was like the crowds that greeted the return of the Apollo 11 crew on Earth. I'd like to know what's really going on. More movies, please.

Colin Chulver the concept artist who worked on Covenant has confirmed that the reasoning was driven by the practicality of dressing a substantial number of extras in an economic manner. The make up for the Engineer acolyte in Prometheus took nine hours to achieve.

That is not to say that the welcoming crowd were not the Lambs who rejected the experimenting which created the Wolves in the Engineers history. 

it is also important to remember in ADF's novelisation he reinforces the notion the population are the tall Engineers who inhabit the space suits and fly the Juggernauts. He does this both in significant and insignificant ways, an example of the latter by describing the steps the Covenant crew climb as made for creatures larger than humans.

Its one of those examples were some people accept artist licence and others call it a plot hole or plot significant. it is the former not the latter.  

Even if they were space Romans I still think it looked pretty boring at that colliseum, the Romans had people being eaten by lions to watch but these dudes didn't even have some poorly CGI'd chariots to watch.  It makes no sense, these people have space ships and they made goo.  Even Buddhist monks have cell phones.  What do they do all day?  The other thing that bothered me was also due to the whole contamination thing.  You have a robot and probes.  nobody cares if the robot dies, you can just rinse him off and stick more white snot in him if he breaks.  Why not just send him to the planet, you could just stick a parachute on his head or drop him in a suit like that guy who jumped from space.  Go check out that place that looks like there's a load of corpses who've been sat around watching eat a Christian special and then radio back.  Check the air for spores and weird aliens like in those movies we all watched back home on future Syfy channel.

true the romans had more fun, but remember, the engineers chose to wipe us out and let these guys live. but for me, id rather go out having fun. would be interesting to see what these engineers did for fun

Ali 81: Maybe they manufactured their own toilet paper? One color per day of the week. Maybe they were playing pranks on each-other (like constant April-fools)?

The Engineers on LV-233 wore burlap like capes/robes as well.  I think that is just the fashion of the Engineers in general. Not all forms of life in the universe feel the need to wear stupid conversation t-shirts or 8 piece suits.  The more efficient they are, the less they care about fashion I'm sure.

^^^

Surely if they are supreme beings they could just wander around naked, impervious to the weather and our foolish concepts of modesty.  Or have bio-armour that just coats them and stops their willies getting caught in bushes and things.  The pygmies shove theirs back inside when they run through the jungle.  Somebody has to sit there and weave those things.

cptrelentless

 "Or have bio-armour that just coats them and stops their willies getting caught in bushes and things"

hahaha first world problems right there. There is just nothing worse than snagging your junk in a bush because your a 10 foot genetic beast too sophisticated for clothes XD