During the last few Steam sales, I've realized I almost never buy games without Steam Cloud support. This is due to my frequent habit of playing a game for a bit and deleting it to make room for another game, only to repeat the process. With Steam Cloud support, I don't have to worry about keeping save files on my machine for backup purposes; they're already in a free cloud service, so no worries there.
This habit, however, has instantly killed numerous deals for me. I didn't buy games like Rogue Legacy and Risk of Rain because they lacked Steam Cloud support. That should be a crime in most states, according to the praise I've heard about those games.
I know I could link a Dropbox account to dump my saves there, but I already have one Dropbox account for the games I make using Unity; I don't want to mix my save files with my projects. I'm also just too lazy to go through the process of transferring my saves to Dropbox.
Has anyone else not purchased a game due to its lack of Steam Cloud support?