I've been wanting to post this for a long time but never found the time/motivation, but because my experience is similar and at the same time very different from OPs, here I am.
I had a mild case of phimosis, and when I was 16 (and virgin) the doctor suggested the operation, saying it was not really needed but it would have made things easier for me.
N.B= before that time I only masturbated without ever putting my foreskin back, because it really hurt

They didn't circumcised me tho, only made an incision where the frenulum was. I could provide pics if needed, but basically the situation is this: because of the abundance of skin, my glans always stays covered, I only put the foreskin back when I have sex with my gf (who btw lives in another Country, so we see each other ~ once every one/two months). I am currently trying to masturbate with my glans out, but it's hard (lulz), I always need some lube at my fingertips and I have to be careful to not squeeze too much, because otherwise my skin would go back where it was, so all in all it's not really pleasant.

For all my life I have been a premature ejaculator, I can't even think about going hard and fast without cumming 10 seconds later, and so I have to pull out/finger my partner/do other stuff before I can start again. Intercourse rarely lasts more than 10 minutes, and the same happens with masturbation: I reach the edge very soon, and then I have to stop pleasuring myself for a while, or do different thing which doesn't involve my glans or the part of skin that rolls back, otherwise I'd cum instantly.

I've come to think my problem is sensitivity. I've been trying to stay with my glans au plein air (in my underware) for an entire day, but: 1. it's very uncomfortable, like it almost hurts when the glands rubs against the boxer, at least at the beginning;
2. my foreskin always try to go forward, and when I'm moving/walking is very hard to keep it in place;
3. even if I succeed, the skin around my glans gets very swollen and I look like a freak of nature (again, pics if needed).

Now to the big question: is there someone out there who had a similar experience? Could I "tape" not to put my skin on the glans but to keep it back, or there are some other methods I'm unaware of? Am I right in thinking that my problem is sensitivity?

Sorry for the long post.