kiss or fist pump?

As I watch the Democratic Convention, I wonder...when did the basic handshake go away? Every time I see a Politian greet a woman, they give a quick kiss on the cheek as they shake her hand...OR, sometimes they give a fist pump to a man? Is everyone now a sports star? When did I miss this memo? When did we become so worldly? Do I turn my cheek when I meet someone new? Just wondering...