This has been a turn-on for my wife for a long time now, and ever since she told me about it, I actually find the idea really hot as well. She loves helping out guys (who are usually much older) who have gone without sex for a very long time due to divorce, being widowed, or just being stuck in a stale marriage. She is very turned on by knowing that she’s giving them such immense relief that they have needed for a long time and knowing how excited they are. But aside from the erotic thrill aspect of it, it generally just makes her feel happy for them as well because she’s a very empathetic, caring, nurturing person by nature. So much so that even her one and only kink revolves around empathy, haha. I guess she just has a thing for “helpful sex” if that’s even classed as a kink lol. It’s not just merely sex either; she makes it really intimate and loving for them too. I don’t mind her doing this at all because I think it’s really sexy and hot, but it’s also just really cool and wholesome, and I feel really happy for those guys too. She has done this for virgins too, but that has only happened a few times.