I wear one...
I got so fed up with throwing stuff in my pockets, I went and got a fanny pack. Had mine for years now. I got a few of them. Laugh away, but it helps a lot. A small black leather pouch that sits right next to my balls, suits me just fine. Piece of mind, and I always know where my stuff is. I used to hate when loose change, keys, other crap, ended up ruining my pant pockets after a while or made them baloon out looking weird. Now, everything goes in one place. I always wear one to the gym, either that or I would have nowhere to put my things. Good for holding my wraps. Most of the time I wear one out when dressed casual or hold it (nice jeans). If I am really dressed up, (slacks button up shirt) I will go without it, and sacrifice for a bit as it does not go with that look most times, I feel. Wallet in pocket and keys wherever. As I got older (now 28) I went with what works.....and what is more convienient and easy for me. I never really cared or understood the whole joke if people wore them or not, I see plently wearing them. I get my chops busted once in a while for wearing it but do not mind. Most of the times it's from people out of the gym, who don't workout. I guess since they are not used to see'ing people wear one. I just did what I felt was easier by using one. Most of the dudes in my gym have one. Anyway,...I see a lot of top amature guys and pro guys wearing them in mags and my gym, so they can't be all that rediculious to sport. Alas, they do not go w/ dress slacks 98% of the time...that I will admit so that is the only time I go without for the look and sacrifice convienience.
Good place to pick one up online...
http://www.pricehot.com/fannypack1.html
http://www.beltoutlet.com/waistpacks.html