The main benefit of a section like this (talking from experience) is when it is a anonymous section where people can as for help regarding problems they might be having (psychology part). Philosophy sections and post are mostly made out of people copying something they saw on Tumblr and share it. Meaning a section around that is about 90% spam and 10% actual content. (Last time I checked, NBB tried to work against spam, not support it).
Because of those two things, I don't support a suggestion like this personally.
Well on this other forum there was an entire "Reality" section where people would discuss such personal problems. What this section is intended to be used for and what it was used for on said forum was a place to discuss things like (to quote posts from this section on said forum) "What's the purpose of life" "Lucid dreams and OBEs?" "Meditation and it's effects".
I should add, my original suggestion on this other forum was for spiritualism and that sort of talk, but it was broadened out to be called what it is now. Although, it sort of morphed into that regardless