As stated before, the average age of a gamer is about 30. I'm 22 and still game. I've even thought about what I'll do when I get arthritis and it affects my gaming. I'm planning on being a gamer for that long though I have grown out of it a little bit. I mostly blame that on surfing the web though so I guess I didn't really grow out of it. I've just found other interests alongside gaming. If gaming is not getting in the way of your work or school then I don't see it as a childish hobby at all. Just remember to fit some socializing in somewhere.
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