I have this conversation ever so often with humans that I meet.

You seem to miss the possibility that you look like aliens and not that aliens look like you and that there may be a very good reason for it.

Like... just a guess but... maybe humans were genetically influenced so that eventually they would be compatible with the suits.

For all you know the universe could be teeming with planets of super-sentient clothing just waiting for stupid humanoids to wear them and so they can explore the cosmos.

If what I'm typing sounds like nonsense I can't help you there, it's all in your jeans.