Reasons are because more matured than in your teen.
Look back at our teen years and u can just laught most of it away
now. In your 20s u realise that average looks also attract u and
more acpeting of other's personality and character. Your
expectations as they call it will have gone down but the truth is
not that case, it is your mind has becoem matured and your sexual
preference to things like looks and attractiveness also
matures.