What Buzzrider said.
I've been at it about 3 years also, but I've been very on & off with it. Lately I've been using a retainer all day with nothing on when I sleep. Now when I remove the retainer to pee I have to peel back the skin to reveal the glans, so I'm moving forward, but certainly not there yet. Only every once in a while will I find my soft self covered but it motivates me to continue.
As to negatives/dislikes...
I started out cut very tight, 'erections are painful' tight. But I really had a beautiful cock. Hard & soft it really was quite beautiful. Now I have a cock that (soft/semi) looks like a Shar-Pei. At this mid-point in the process it's kinda ugly, when I have enough skin that it hangs over/past the glans I'm hoping it will look better.
When you have enough skin for dekaratinization (SP?) you'll become more sensitive - that's good & bad as you relearn your normal. Sometimes it's annoying, some times it's
. Now that I keep it covered except to sleep, pee or for fun it's mainly good. No, it's not hugely more sensitive, it's subtle - but it's something where there used to be absolutely nothing in my case.
Another 'weird' thing - when you are retaining, the 'foreskin' that is now the tip of your penis... if it brushes against something (say the sink edge while shaving) your mind acknowledges the touch as on the side of your shaft (it's shaft skin pulled forward after all), but it's actually a touch to the tip. That's a bit weird/confusing to me. Imagine someone tapping you on the right shoulder & you feel the tap on your left shoulder. It's just an oddity you'll come across on the journey. FYI.
I was happy to stop once things weren't tight & did for a bit.
Then I continued & was happy when I had enough skin to j/o without lube, & did for a bit.
I was happy when I could comfortably retain & started to get sensitivity on the glans & stopped stretching for a bit.
I guess I keep stopping to enjoy the successes. Need to start stretching again to get the one eyed monster. ;-)
Finally, when I stretch I am very careful to stretch lengthwise, & not width wise. I want my new foreskin as tight as possible in the hope it might grow out tight enough to stay covering the glans on it's own. It's really easy to 'stretch wide'. I'm only hoping/guessing here, but again - FYI.