Remakes make business sense. Every game is a risk. A portfolio of products that includes remakes reduces that risk. A game that was previously popular is easier to remaster than trying to make some new that's less tested. There are always brand new gamers to introduce to your IP as well as existing gamers who may have missed or want to replay earlier games. If you're a mature studio it's almost irresponsible to not d…
Personally I check the steam store regularly and buy new games often but I rarely end up playing them much because I prefer to just jump back in to Skyrim or some other game I have been playing for years.