I have thought about that and, as you say, my use-case is entirely "hobby" so there's nothing I host that's of much interest to others (if things break, which they have, it inconveniences me rather than other people).

Having said that, the websites I host are behind Cloudflare and so port 443 allows Cloudflare's ASN, but blocks everything else. This way, any of the IP addresses that are blocked from direct access to port 443 can still access the websites, just through Cloudflare's added layer of protection.