I have to agree with those saying "all games". Demos were awesome back in the day for a variety of reasons (checking to see if your rig can run the game and how well, hard financial times, just messing around, etc.), and I was pretty bummed about how a lot of developers in this generation have decided that they aren't worth it. I haven't gotten around to playing the new DOOM demo yet, but I have been so excited to play that game since it was announced and am glad that I'll get a chance to do so sooner rather than later. In particular, my computer isn't very good, so I'm excited to see both how it runs on my PC as well as how nice the controls feel on the PS4 and then weigh my options before making my purchasing decision.
I support anything that helps the consumer make more healthy purchasing decisions. No one likes to buy a game and realize that they regret spending money on it, or that they can't really play it because of things out of their control. There are Steam refunds and such, sure, but it's kind of an excessive amount of hassle when most people just want to try the game out and see if it clicks with them. I also believe that it helps curb piracy, as a lot of people are known to pirate games simply to see if they like them before buying. Although some people want to believe otherwise, $60 is a lot of money, and the buyer should have some way to assure the quality of what they're buying before they do so. Considering that games are such a subjective experience as compared to other mediums, I think it's perfectly fair for people to feel that reviews simply aren't enough to make an informed decision.
