sepulus

Something that has always bothered me about mass effect is that none of the past races have used generation ships. They (protheans at least) have hibernation sleep and power supplies that last for thousands of years.

They have tried to hide in hibernation on planets that are already under siege, but why not in space? It is much more empty and should be easier to hide there than anywhere else.

If I have missed something in the lore let me know because this has been bugging me for years.