Abs :
I've not been to a gym in ages before this week and one pleasent change I noticed was that the free-weights hadn't been nabbed by a group of guys who glare at you if you look interested in using them. I've run into the 'Gymier than thou' crap before.
i hear ya. you're always going to get some of those guys. i'd say something ("i pay just as much as you!"), but i'm a wuss and they look pretty aggressive... in all seriousness, i've found that some of the biggest guys are the nicest and helpful in the place. they worship at the altar of free weights continually and love to see new converts. however, there are some pretty specific rules of gym etiquette that are taken extremely seriously by some (it's like golf. except more neck veins).
the worst are the nuts who run over to spot you as soon as you start struggling on the bench or something. somehow, they always find a way to get their crotch as close to your face as possible (you know, maybe i need a new gym...).
good luck with your riding (you should get back into it). my dad was a bike nut and he kind of got us kids hooked on it.