I get the part about the usefulness of therapy being the confiding in a stranger rather than a friend. For the really tough stuff, I think it's both beyond their ability to relate and not wanting to burden said friends with my experience/inner struggle. And not having to worry about the reaction of my friends and taking care of them once they understand my struggles makes therapy very useful for me.

I did some student counseling in college that was very useful to me. Although I would need to revisit therapy a decade later, and then a decade later after I thought I was done, the college counseling gave me the skills to know therapy could be useful to me and the sense to seek it when I needed to. Good luck to you.