I am currently not in therapy but I was until a couple of months ago. I used to take paroxetine which didn't help me at all, it just numbed my feelings a little, but it didn't stop me from having thoughts about suicide and depressiv thought in generell.
I had three therapist and all of them advised me to go into a psych ward, but no way in hell do I want to go there and in the end I still don't think it would have helped me at all. My foremost reason for suicide is, that all the bad stuff in my life already happened and no therapy could give me all the years back I missed out to live like I should have at that age. I am just way too stained from my past to ever be happy.
But there are definietly people out there who benefit from a therapy and maybe see the light again. It really depends on each individual human.