I sell off everything I don't play or like. As I play the games, I decide whether I'll keep them or not, and if I don't like em...off they go.

If I had to sell to pay for food or a roof over my head, I would (well, maybe not food), but chances are very high that I wouldn't ever sell most of it. Even if I had to sell, I'd cherry pick the stuff I could bear to part with and get back later first. My collection is worth around 25-30K right now if I sold EVERYTHING for high eBay prices, and that would take MONTHS.

Basically....barring horrible damning financial difficulties...NEVER!