I find myself in the same situation. I've not done upgrades or changes than rotate the cartridges and styli I have for quite some time. My entire set up has been done over the years on the cheap. I began to find the few fairly costly changes I did make made very little change for the dollars spent. For me, and I am only speaking for me, such began to look like a rabbit hole I did not want to fall into.
I enjoy my music, enjoy the three stereo systems I have set up and like the three main tables I spin my vinyl on. On these I rotate various Shure, Empire, Pickering, and Acutex carts. I further rotate various styli I've purchased on these. I've found myself content with what I have and what I hear.
I've even slowed my buying of tapes, records and CDs to a crawl. Having a 1000 records and at least as many tapes of various formats not to mention over 300 CDs I discovered myself looking for but not finding much old or new that interests. Love looking though and am happy when I see something that is of interest.
Having other interests is a help here as well. I find I have so much I want to do that my time is taken. I like that. Already quite ill and recovering from major surgery another sobering event that gave great pause and much self-reflection was my nearly being killed in a very, very serious car crash in October this past year.
I'm still recovering from that on top of recovery and dealing with several other chronic health concerns. I will for quite some time I suspect. For my purposes here it made me think even more and I realized in more than an abstraction how fragile existence is and to appreciate what I have and what I need/want to do each day.
I come to AK once a week or so and binge read topics and posts of interest to me. And, as the OP said I've learned to be content about it all. In so far as ganja is concerned though I'm allergic.
Gerard