It's stunning how many people seem to forget that there are other countries on the planet that use dollars and weren't involved in Vietnam. No, I'm not making an assumption. The person who posted this is Canadian.
Y'all really need to take a step back and reflect a little bit.
Eh, my parents are pretty happy in their 70s. They still go skiing, travel a ton, etc. Stay active and your 70s can be quite pleasant.