Is it me or does adding coop to a ‘horror’ game kinda just ruin it?

Personally I think the whole reason a game’s scary is the whole idea of ‘loneliness’ where you have to consider that you aren’t getting help and you are all alone, well most of the time. Take for instance, Dead Space 3. Don’t get me wrong, Dead Space 3 was fun, but I considered it more like an action game with monsters more than a horror experience. Now Dead Space and Dead Space 2 were great in terms of creating atmosphere, struggle and survival, but what made them scary is the fact that you had to fend for yourself and get through the environment by yourself.

But I guess it’s up to preference because I can understand some people being reluctant to play certain horror games where you’re alone, such as Amnesia or Penumbra.