I'm considering sunsetting SBS and making it readonly

Hello, site operator here. There's not much happening on SBS these days, and that's OK; people move on, etc. But I still have to host the website, of course. Nearly every single new account request is a bot. Honestly, it's getting tiresome to get 3-4 requests every day for a new account. Beyond that, the website is made significantly more complex, requiring vastly more resources and attention, to still allow new content/edits/etc. Because of the extremely low usage these days (the first page of activity goes back 8 MONTHS), I would like to make the site readonly soon. I don't know when, maybe sometime early next year. This will remove most of my maintenance requirements for this website, and also remove the reliance on a very large, cumbersome service that is taking up resources on the server and costing additional money in the form of "need a bigger server to host". I know that there's still some activity here in the form of documentation edits, etc. I feel bad removing that ability, so I wanted to hear some feedback before I go through with this. Again, this is only going to make the website readonly; all the content will still be available. I'm very tired. I don't want to deal with the web anymore; dealing with companies and costs and people trying to break in all the time and just bad people in general doing bad things. Making the website readonly is the first step to removing my reliance on all this stuff and reducing my stress. I greatly appreciate all the lovely people and interactions on this website throughout the years, and I don't want to just remove all that. But nobody's really using the website anymore. We've had the new version for over 1 and a half years, and we had a mini-revival for a bit, but I think it's time to let it go.