I haven't once in my life made a good decision based on feel good thinking. Naturally I may be an outlier but overall models of the world that "feel good" are generally wrong models. I value having a accurate map even if it isn't useful (yes having a wrong map can be instrumentally valuable, and a positive outlook actually often is).

Also warm fuzzies are one of the easiest way to manipulate someone. When someone tries to shower me with them I nearly indistinctly try to counterbalance them. Hm, now that I think of it that pattern matches to being a cynic.