About 20. I realized I was stuck going to grad school or moving back home and working at the mall.
At 19 which i am now
22 but now I realize I set myself up for failure by having a 10 year plan when I was only 18. You can't predict things THAT well, so let it happen instead :)
Since I wasn;t sleeping with an adult woman by age 12...I suppose age 12
was pretty late to realize it at 32..Good Question by the way