Never set foot in a gym in my life. Run near my house or in the mountains 2-3x a week. Lift weights in the comfort of my own home 3x a week. Bought all my weight crap on craigslist cheap. Only guy in better shape than me at work is a competitive bodybuilder that has won shows. But he uses "stuff" to get like he is.
Point being, gyms not necessary, as LVMIKER said.
I wouldn't mind the eye candy a gym has to offer tho...