I'm 47 and haven't had any sexual encounters at all, and I'm not planning to have any. I don't feel bad or abnormal about it, in fact I'm fine with it. I've got a lot of other interesting things going on in my life, that I rarely waste my time worrying about romance/sex as I did when I was younger.
My social anxiety is at a level where I need to develop enough trust, particularly with women, to be relaxed enough to carry out a normal conversation. That would be enough to make my days easier for me. Anything further would require exponentially more trust, and I'm not sure I need take those extra steps at my age.
This really inspires me, thanks! I need to develop an attitude more like yours and accept myself and my life more. As you point out, it's a waste of time to worry about romance/sex...I need to keep in mind that if and when it's meant to happen, it will happen. I think if I didn't constantly compare myself to others I wouldn't feel so bad. There are so many people my age getting married, having babies...but it's ridiculous to use others as a measure of my own "normalcy".