I originally earned my post-bac with the intention of applying for my Master's right after, but, like you, was very turned off by the petty infighting and politics. After the program, I found myself simultaneously working a handful of jobs loosely related to the field, and an internship, which gave me the illusion of engagement with my industry. I tried for a while to secure an entry-level job at a museum or gallery but finally found myself working in an administrative role within an academic institution (admissions). Once again, the close proximity to academia gave me access to some academic resources and classes. I moved on into a development role at another academic institute where I am currently employed.
I can tell you now that there is drama, elitism, and politics everywhere. Sometimes even the most charitable and equitable places are, in reality, quite toxic. I know from my friend's experience, industry can be more bearable but anything in the social sector will have its unnecessary challenges.
I think you need to review the general ed classes you enjoyed and reflect on the actual content that intrigued you and try diving deep into one of those subjects. Obviously, general learning is incredibly exciting and stimulating but try focusing on one area for a few weeks and see if you can see yourself staying on that track.
In regards to age, I never imagined myself pursuing my Master's so long after earning my undergraduate degree. However, I feel more equipped than ever to return to school for something that truly interests me. It sounds like you actually would benefit from more time off before diving back in. I just met up with a professor whose class I audited a few years ago, and she told me that she's still wrapping up her doctorate dissertation well into her fifties. So, don't put so much pressure on yourself. It would be better to wait ten years and return with a real sense of yourself and your interested than to pour in money to a program that already leaves you a bit bored. That is definitely not the way to start graduate school.