I mean there's a million good answers, but I think probably the most interesting time to be a human would've been the Colonial period. A, if you were from whatever colonial empire, you get to sign on with a ship and go someplace that like [i]two[/i] people have ever come back from. B, if you're from any of several colonized civilizations, you get a real actual just war -- which would be a lot of things, but none of them 'boring.' Bonus points if you're in Japan, because then instead of war you get to experience the fastest period of cultural advancement in human history. C, in a select few places, you get to contribute to the birth of a brand-new friggin' country, which would've been exciting as all hell. D, pirates [i]and[/i] ninjas/samurai [i]and[/i] cowboys [i]and[/i] like a shitload of equally incredible traditions all coexisted in the world at once (lookin' at you, mamlukes). 

It's without doubt the most interesting 2-300 years in human history. 

Then again, if I pick 'right now,' I get to keep my PS4, so....... decisions.