Such a hypothetical is not really telling, but Jerusalem, 10 to 40 AD for starters.
:>)
If your desire was martyrdom, then perhaps that would be a good time to be living. Just ask Stephen, or the disciples who would put to death by Saul of Tarsus. Or perhaps you would prefer to not live as a Christian, and just go with the social/political/religion flow of the day?
Your life expectancy, even as an unbeliever, would be considerably less than what you enjoy today. You might look forward to contracting leprosy or any number of equally debilitating diseases. The mortality rate for your offspring would be around 50 percent. There would be a high probability that your wife would die in childbirth. The local tax collector had many techniques for making your life miserable. Your country was occupied by unscrupulous foreign soldiers. Shall I go on?
That's a real nice place to be. And that was the garden spot of the world, no?