because, they feel the need of phisiclly tuching of any part including thr wet moist lips, the also enjoy the feeling it gives to their lips just like a masage but for your lips.
human kiss because they like too. human find interest in kissing it like saying why do dog bark. human have always kiss as a sign of love or just for fun. most games get started by kissing like spin the bottle.
spin the bottle is pretty awesome. but i bet peole kiss ust because they want 2. just 4 fun.& i absolutely love my bf, & were gonna have our 1st kiss 2morrow nite & i bet it will be AWESOME!!!!!!!!!!
My threary on that question is that humans kiss to express felelings such as love. I express love with my girl friend and we kiss onlly to express love. It can aslo be use to help people feel better. When she is sad i give her a small peck on the lips or possibly a cheack.
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