If you could go back in any time the world ever existed when would it be?

Question

Some ideas are Dinosaur age, Medieval times, World war 2, the 70's, Civil War, just that kind of stuff.

Answer 1

Last week before some clown plowed into my car.  I'd avoid that road.  

Answer 2

The 70's just because I collect sunglasses from that era and i'm also a fan of most music and art that was created then, but I'm also into all things Medieval, But as long as I can get back to where I am now, I would probably go anywhere.