I think people underestimate the value of bad trips. Sure it can be hell and very unpleasant / traumatizing. But for me it really helped me realize all the stress and anxiety that was just sitting there for the past ~20 years. It had been there for so long that it was my "normal" and couldn't even see it.

While that's true for me as well, I still think the 3rd time was too dangerous. It'd have been safe enough with a trip sitter.