What about when you feel so bad that venting constantly to your loved ones will eventually tire them out and alienate them? Everyone has their limits, especially when the one who is constantly offloading their suffering onto you is a loved one. Therapists are good for that purpose imo, they don’t love you and are trained to converse with you effectively about these matters, especially if you are mentally ill (most people who go to therapists are how you describe probably, but there is a chance I would have OCD + BPD even outside capitalism if another trigger like the death of a loved one came to pass)