I’ll buck the trend and say “yes, for a home LAN, it is the bees’ knees”. I don’t do it now because my country (and hence my ISP) does not do IPv6, but for most places it’s worth doing.

It depends on how your ISP does it. When I did it before, my ISP gave me a /56, which is pretty sensible and I think fairly common. If you get smaller than a /64, (a) your ISP is run by doofuses, but (b) it’s going to be a pain and maybe not worth it.

A /56 was much bigger than I needed. I actually only used 2 /64s, so a /63 would have been fine, but network configuration is fun (I think), so maybe you can get creative and think about different ways of allocating your network.

I had 1 /64 for statically-assigned, publicly reachable servers. And then I had a separate /64 for SLAAC (dynamic) allocated personal devices (laptops, phones, etc.) which were not publicly-reachable (firewalled essentially to act like a NAT). (Sidenote, if you are going to use IPv6, I recommend turning on RFC7217 on your devices for privacy reasons. I think these days it’s probably turned on by default for Windows, Android, iOS, etc., but it’s worth double-checking)

The big benefit to using IPv6 is that all of your home machines can be (if you want them to be) reachable inside your network or outside your network using exactly the same IP address, which means you can just give them a fixed AAAA and access them from anywhere in the world you like. If you’re into that sort of thing, of course. It’s a lot of fun.