Well for me its like I sort of have to collect something.. Iv grown up with crazes of Pokemon, Yu-Gi-Oh and Crazy Bones. I collected Pokemon alot a little when i was like 7 and from about 9 onwards it moved onto Yu-Gi-Oh, but with trading cards they ended up sitting there and doing nothing.(I suppose you could say the same thing about collecting games but I'll continue..)
Since I was about 17/18 I thought "Hey! Why not collect the games I loved most as a child and keep them sealed?". Alot harder than I thought.. though my first sealed game I collected was a Black Label Tomb Raider 1 for the Playstation I then thought about all the other games I loved as a child.. which was primarily Crash Bandicoot, Spyro The Dragon, Tomb Raider, MediEvil Etc.. So Iv mainly focused on Crash Bandicoot for now and expanded it towards what Naughty Dog released as I grew older(Jak and Daxter and Uncharted).. so as I grew older with the rest of Naughty Dog's games and decided to make a collection out of them(And the others but Naughty Dog games take priority).
Maybe It's because I don't want to grow up and just be a child again for when life was easy and Pokemon, Yu-Gi-Oh and Video Games were more fun.. because let's face it.. the classic games and playing Pokemon on the Gameboy Color was an amazing experience and will be some of the best memories I have whilst growing up!
That's my piece.. looking forward to what everyone else has to say!