Travel through time

If you had a possibility to travel in time, which year or ere would you like to visit? And why?

I want to travel to the year when our universe was born.

I want to know the origin of the universe.

If I had the possibility I would go to the grandfather paradox

I think I would like to experience life of 50, 75, 100 or 150 years ago.

I would definitely move to at least 20 years ago, to see how life was without phones, etc...