Most of us are not very passable, u are right, we are born and grow up the same as other men, this is why we do heavy make up and dress and act very slutty. Also according to many men that have used me, part of the fun is seeing us trying our hardest to look and sound femenine to get you guys hard even if you can still tell we're not girls.
from my experience irl not internet a lot are not passable. i went on the dating sites and u cant find one that looks good. another things even the ones that look good even if they look passable someone who is familiar with trannies would be able to pick them out from the bunch.
Sometimes you be surprised you got some and look good you got some that are possible I mean passable you got some that a regular f****** dogs man they should even try to get surgery