Firstly, congrats on 3 months without tobacco
As for how many setups people have, you're going to hear a whole range of answers, but here are a couple of thoughts...
This is a board for vaping and a lot of people who hang out in here are hobbyists, so the numbers will skew higher than if you canvassed the vaping population at large. Just know that a fair few folks are reeeeeeally into this and the amount of gear they've got is extreme, to say the least.
Smoking is an addictive behaviour and so can collecting be. I've seen a lot of people comment that they are "a little OCD" and I think that as a group, we're prone to compulsive behaviour. Now, is it harmful? Doubtful. Especially when viewed in the light of the monetary and health costs of our previous habit.
For the first time in 20 years you aren't the bad guy/girl. I think it's only natural that it feels too good to be true, that there must be a dark side to guard against (assuming your OP wasn't completely tongue in cheek). That'd be the social programming talking (and he's a jerk).
Soooo... fill your boots, IMHO. If you ever feel the need to cull the herd, you can always gift tanks to people you meet who'd like to start vaping. It's all good.