you dont give a depression diagnostic based on comments on the internet. and asking oneself questions about their future is not a sign of illness, its what conscious beings usually do.
Think: If you see benefit from therapy are you not more likely to keep going?
Therapy has helped me anyway.
Uncharitably I've seen this framed as something like "therapists only help people with simple problems."
When someone recommends therapy, just treat it like you would any other recommendation that doesn’t need to trigger a “that doesn’t apply universally!” response. Nobody is forcing anyone to do therapy. Many people find it helpful. Many people don’t. Still quite reasonable for GP to say “therapy helps” with an implied “in my opinion.”
And I am neither anti-therapy nor pro-therapy (only a simpleton would have an unnuanced position on such a complex topic). Next time please refrain from attempting to put words into my mouth, it is disrespectful and adds nothing of value to your comment.
"Professional help" is not always positive. If you have internal issues to fix, external help may or may not be the right thing for you. There's absolutely no standard approach for this kind of things.
> a therapist (a good one)
So what they end up with a bad one, was that good advice?
It's important to understand the possibilities. Fortunately today with the internet it's easy to search for symptoms and go to a doctor, and I'd highly recommend that to OP and anyone else who thinks they might need it.
However, OP seems unhappy with their current life and is unsure how to fix it. Therapy often can help with that - its not just for depressed people.