Because we were socialized that way.
/thread
Evolutionary psychology bulls**t is bulls**t.
I don't often agree with FallenMorgan, but he's bang on the money here.
This notion seems to depend on either 1 out of 2 claims being correct:
1. That there exist many cultures where these features are ignored.
2. That all cultures have reached this by coincidence.
I don't think 1 is true (although cultures do have emphases that vary in strength I do believe these features are important all over the world) and 2 seems unreasonable. I generally doubt all aspects of sexual attraction could be non-genetic, but that's just my hunch.