Stipulations:
- You cannot die and are immune to disease
- You cannot alter the future such that you change the world from your point of origin. i.e. You cannot become so famous that future people recognize you as immortal.
- If you vary the timeline too much you will cease to exist.
Yeah, the 60s would be insane. Everyone fucking because they live in a world where they are far less aware of STDs. Ignorance is bliss