I use one of these. A tactical Maxpedition Jumbo versipack. Nothing gay to this if you ask me. Too bad it's illegal here in Canada, but this bag will let you conceal carry a handgun if you wanted to.
I use this bag as my EDC (every day carry) bag. Along with my wallet I keep in my back pocket, I also carry my set of keys, cellphone, flashlight, muti-tool, and pocket knife everyday.
Depending on the day I will also carry with me my digital camera, ipod, sunglasses, etc.
Everybody has different needs. There will be days where you need to carry more than just your wallet, cellphone, and keys. And for those days, it will probably be more comfortable carrying a little bag with you. Yes some of my friends tease me for carrying a bag with me, but the type of work I do makes it crucial for me to carry my EDC items at all times. And they tend to shut up when my pocket knife or multi tool saves their day from whatever problem that needs something cut, fixed, etc.
I don't know. Just my 2 cents.