Well, if I had been born earlier, or later, I would have never met my best friend since we wouldn't have been in the same grade all those years back...So no. She has become a large part of my world <3.
I probably would go with either far later or far earlier. For far later I would probably pick a date anywhere between 2090-2290. It also would be nice to be born a little earlier. I could see history for myself. I'd probably pick to be born in 1890s Europe. With WW1 on the horizon I'd be able to shed my blood for the German Empire. A country I love so much.