Wanted it to be 24 ...
I had thin, trophy blonde girlfriends in early high-school. I didn't go past 2nd base, thought I was "respectable" and got dumped because I wouldn't lose my virginity -- of which I could have easily done by age 14.
Mid-high school my sexual drive kicked in when I discovered full figured women. I went well past 3rd base and just short of home, but I never inserted. I totally practiced outercourse.
I wanted it to be on my honeymoon. It should have been when I was 24, on the 3rd night after my wedding. My wife got above of me, I felt her juices dripping all over and down my vertical cock and I still remember that sensation. Then she dropped her body and it was unbelievable!
Unfortunately I had a full-figured gymnist as a girlfriend when I was 18 who was stupid and mounted me when I wasn't looking. She did it because she wanted to prevent me from getting up and answering the phone (work had called me every night before -- right in the middle of our love making). She thought I was kidding when I told her to get off of me and I physically tried to shouve her off. I unloaded in less than 30 seconds and it was not pleasurable at all for me -- hurt very much, too quick, too violent. And then she slapped me for it -- totally ignoring that it was her fault. Hell she was still trying to bounce atop fo me when I was unloading and totally went numb (it took her about 15 seconds to realize what I had done).