J would not. December 2011 I graduated high school and then started college in January of 2012. I've traveled abroad, moved across the country, moved back, found my SO, and am now pregnant. If I traveled back I don't know if any of that would still happen.
My SO says he would though, just to fix a lot of his missteps and make what he has now happen sooner. December of 2011 he was in a bad relationship with a 4 month old and a pregnant drug addict wife, who left him in 2012 and disappeared with the kids. He didn't hear from her until CPS had his kids. It's been a really long journey and he would like a redo to skip all of that and just move on to the good part.