I think it's "worth it".
I also think what you've been feeling is what I refer to as "Hobbyist Maturity"; that point where the enthusiast feels like what I have is good enough; I'm not seeing massive improvements in either quality or enjoyment anymore, like I did when I had lesser equipment - and the gains from upgrading were immediate, very noticeable, and very satisfying to see the results. Now I feel like I'm spending increasing amounts of time, effort and money... while getting decreasing amounts of pleasure out of the results...
Happens to most of us at some point. And there is a little bit of sadness / remorse because something that once brought excitement and pleasure no longer does. And you miss that. So you question the entire "metamorphosis" and wonder if where you are at the (perceived) end of the journey was worth all that effort.
I'd bet if you thought more about all the memories of chasing down some of those things that you thought were either unachievable or impossible to find and how it felt when you actually had it in your hands, the first time you hooked it up and the joy and anticipation you felt at that time, those times when you brought home a piece of (almost) junk and brought it back to life and the satisfaction of a job well done... you'll feel a little better about the whole ordeal. And always remember it's perfectly OK to enjoy what you have - and just enjoy the here and now...