Yeah, my experience is quite similar actually. I'm originally a top-leaning switch, but in recent years I’ve really started to crave subbing too. My theory is that as you get older and your personal/professional responsibilities increase, you really start to crave those moments when you can just "let go" and be under someone else's control.

When it comes to tickling, it's really hot to torment someone while knowing I'll probably get the same treatment from them twice as bad after we switch. Other way around too. There's a decent amount of content about this online but IRL it's been hard to find potential partners for this.