My Secret Hobby

I've been keeping this secret hobby of mine from my friends for months now. I love playing video games that are a bit on the childish side, think 'Sonic' or 'Mega Man.' When they ask, I usually say I'm too busy to play anything lately, just so I don't feel like an outcast in our adult gaming group where everyone plays more complex and serious titles. It's silly because playing these games makes me genuinely happy and reminds me of when I was a kid with no worries. Sometimes, though, I worry about what my friends would think if they knew the truth. Would it change how they see me? Is being happy with my little hobby enough to justify hiding it?