I am a pre "Baby Boomer" and as such have witnessed Seismic change.

Examples are:
1) "No Smoking" in restaurants, bars, trains and planes
2) People picking up dog poop
3) Medical marijuana
4) Legalized gambling
5) Legalized abortion
6) Same sex marriage
7) Fitness training-gym rats
8) Running for exercise
9) White wine
10) People carrying their telephones
11) People no longer remaining married "for the sake of the children"
12) Children born out of wed lock (hooking up)
13) A minority President
14) A potential female President
15) Serial shootings
16) Credit card currency
17) Yoga (yogurt and pizza too)
18) MRIs
19) Body part replacements
20) Blogs and email