I like how easy to use GOG is and most importantly, the fact that everything is DRM free and you're able to archive your content as offline backups. In this digital landscape that's becoming more and more common, that is a very important stance on ownership for what you buy. GOG gets nearly 100% of my gaming support (let's face it, there's the occasional game I have no choice but to buy on the competition) and I'll even buy games over again when they come out on GOG! My next purchase will be the Riven remake coming out in a few days!