Yeah I know how that is. Thats what happens in high skill ceiling games like Starcraft. Even the pros have to play constantly to keep their micro and timing up. I'm playing a lot of Dota 2 at the moment, an even though it's challenging, it's nowhere near the brutality Starcraft/Warcraft is.
How you doin in Dota? I got ~50 hours of play time in the last 8 days, it's practically all I do in my free time and when I'm hungover on the weekend. Haven't played a game this much since WoW, which was like 4 years ago.