I'm hearing you, @auOrei. It's a very difficult decision to make and I totally sympathise with your feelings that your treatment is destroying your chances of recovering.
I wasn't brave enough to go against the wishes of my family--I went through all this 10 years ago so knew (or thought I knew) what I was in for--so went ahead with the chemo. And finished it, even though I really should have pulled out after three rounds. I now feel like shit, and wish I'd kept my mouth shut and never mentioned it was an option but at least I won't have to hear how about how I had opportunities that I didn't take.
It's a very personal decision and topic. I'd never advise anyone to totally refuse treatment having seen what has happened to some women who adopted an alternative approach to their disease. There is absolutely no way of knowing either way whether those sorts of choices truly affected their outcomes. It is your call in the end. It's not uncommon for chemo to be curtailed because the patient can't tolerate it.