I think it would help for me to elaborate some more. One major factor in my decision is that it's
simply put, too sensitive. I know anti-circumcision people are going to pull their hair out when they read that, but it's the case. I can't just enjoy the ride. To use a rollercoaster analogy it's like I have to always hold on to prevent myself from flying out of the seat, I can't just put my hands in the air and let go. The orgasm comes up so fast I find myself concentrating just not to cum a lot of the time.
I've experimented with numbing cream, (I know that sounds crazy), but it really helps. I really feel the problem is too much sensitivity.
That being said let me also say that for me personally it's more about the variety of sensations than how intense they are. I find that when the frenulum is mostly, but not completely numbed I enjoy it the most. To use a music analogy it's like having all the instruments there but just turning down the volume on them.
I'm loosely cut and often the skin bunches over the head, making everything too sensitive. I know many people would disagree and love all the extra intensity, but to me it's a white-wash, just too bright. I started taping the skin back and the sensations have calmed down some.
As long as the variety of sensations is there: hot,cold,smooth,rough,vibration,pressure,etc. I'm good.