It makes me feel better that someone else sees it in a similar way. Their age is, indeed, the thing that makes me most wary of them. I didn't really know who I even WAS until I was 24/25, much less what I wanted in partners or even play partners.
I don't necessarily have anything against FWBs or being a plaything for them to experiment with blah blah blah but I know myself and I know I would develop feelings and be wanting more than they either could or would be willing to give me.
You think it might be best that I just completely sever any hope I have of this going anywhere and just maintain a friendship and stop talking about anything intimate with them?