Several of the previous answers are my reasons as well, I love cars, I build models that I will never see here in the US (unless I become a multi-millionare), cars I like...etc. Heck I tell my wife that I do it because our garage isn't big enough to work on multiple 1:1 scale projects. When I get tired of static kits, i work on my multiple RC cars...then go back to my models or comics or video games or gaming miniatures or drawing...sigh too many hobbies.