Great question man, I'm probably going to go off on a few tangents but I'll describe my experiences to you all:
It's funny, because the first thing that is obvious about pretty much everything is that they are HYPOCRITES. For example, they will bash games like World of Warcraft or Runescape (having maybe even played both religiously before), and then play equally tailored games. The first game that comes to mind to me is Skyrim. As a result of Skyrim being a console game, it is less frowned upon automatically, for whatever reason.
I have played Runescape since 8th grade, around 2005. Though I don't play it that much anymore, it holds a nostalgic place in my heart and I still play it out of this nostalgia from time to time. I have always enjoyed things that people either love or hate. Runescape, Dragonball Z, Yu-Gi-Oh and Pokemon, etc etc.
While my window of time enjoying those aforementioned things may be larger than most people, I don't feel the need to ingratiate myself with people by saying I like the same things they like. I honestly don't give a damn what people think about what I do. If they know me for me, chances are I make a favorable impression on them. If people judge you for hobbies, that is sad. There a tons of hobbies out there, card collecting, comic books, fishing, etc. etc. Diversified personalities is what makes living so GREAT.
Never feel ashamed for something you enjoy doing, granted it is healthy and preferably legal lol.
Another personal example is my enjoyment elicited from watching and playing Tennis. A lot of people in my family try to make fun of me for it, but do you think I care, LOL hell no man..hell no.
The people that talk trash about the hobbies + activities are the same people that either A: Do the same thing B: Are insecure about themselves C: Do even "dumber" things or D: All of the above.