Maybe it's not a problem for you but it certainly is for others. Personally, I don't want to have to install a client (DRM) just to be able to download a game. Thus, I stick with stores like GOG instead and don't play anything that is limited to Steam and the like.
I understand your situation. I think there's no avoiding the fact that you'll be missing on big titles due to it. But the great thing is that new games are always around the corner and sooner or later some will fall into your net (GoG, etc.) Also, big titles sometimes end up on GoG-like fronts after aging.
It's arguable that you're actually missing something with most "big" titles. I randomly look at what EA and Ubisoft put out every few years... and it doesn't look like I'm missing anything by ignoring Origin and UPlay.
