Humans kiss, because of this verse:
Psalms 2:12
"Kiss the Son, lest he be angry, and ye perish
from the way, when his wrath is kindled but a little. Blessed
are all they that put their trust in him."
Well, the Son anyway...
Humans kiss each other, because our lips are the natural interface with...our face...which is, like, the seat of consciousness...
I like to kiss females, because, well...
The taste, the texture, the intimacy, etc... Make me feel good...and kissing is a good way to gauge just how much someone is into you.
*Oh yeah, if I'm really into you...I'll lick your teeth...!

;)
