If you could go back in time and live in a different time period what would it be?

There is so many time periods that come to mind, I would want to go back and Live in the 1960's or 1970's. I love the music and the culture, I would probably be with all the Hippies and Beatniks. I would also love to be friends with Tommy Chong. What time period would you want to go back to? Why?