Is Collecting Sealed Games A Real Hobby?

Jet Set Radioooooooooooooo!

Greetings. This post was suppose to be posted about half a month ago, but assignments seemed to to keep coming in and I kept on buying cheap, shit games. So in-between playing cheap, shit games (DNF isn't that bad to be honest) and doing assignments, I forgot to write this post. Over that the object you see in the above picture took about three weeks more than it should have to arrive, further postponing it. When it did finally come I was too busy screaming at my TV because of how crap Homefront was, but how it had an awesome story and I didn't want to stop because of it.  
It's kind of hard to see in the above picture because of the flash, but that copy of Jet Set Radio is still factory sealed. Going on Ebay while slightly intoxicated is never a good idea (repeat with me, never) and next thing I knew I had spent roughly $10AUS on this. Good deal really, so I don't feel too bad. That's just roughly two Red Bulls I've missed out on.
Sealed Dreamcast games are quite common because the console (in terms of console life spans) isn't really that old. I think because of how quickly Sega pulled the plug on it, lots of games were probably forgotten about. It seems to be quite common when a box of still sealed games is found in a warehouse somewhere, and that was probably the case for this copy. The sales page said more than 10 were available, so I guess the seller got them in bulk.
A lot of people will probably be like; "Hell yeah sealed Dreamcast game, it's just like Christmas 1999 again" and then they would proceed to play their favourite Smashmouth album while taking the seal off. But I can't seem to get myself to open it. I love the game and I've played it, but for some reason I rather keep it sealed because of some sort of weird collectors desire.
Games are meant to be played, not imprisoned in clear plastic. Everytime I see images of whole collections that are completely sealed, I feel dirty. More so when the people just keep it so they can sell it later for a profit. I guess I would never sell this (like anyone would buy it anyway) but I feel I should keep it sealed. This is the only sealed game I own, everything else is open and fully playable. Would it be okay to just keep this sealed? And make sure I don't have a whole collection full of sealed games that's only good to look at and brag about on the internet?