I spend as much time as possible naked while at home, always found being nude is more comfortable and relaxing. Not so much in winter months of course which is a real pain as I miss that feeling of freedom.
Opposite to me, I'm circumcised and it's fairly rare in the UK, maybe 10%. Never really bothered me looking different, and I didn't get teased at school either. Have noticed people like to take a discrete look when they can at gym locker rooms.
There's no requirement to pull back foreskins at clubs. Circumcision is fairly rare in the UK, so most of the men I see are uncut and vary in length of foreskin. No issue if you want to pull it back, just don't draw attention to yourself!
Best part is enjoying the freedom of the sun and breeze on your entire body with other like minded people.