I doubt many people still use it as a daily driver (if you do, tell us about it in the comments, and provide screenshots of what Boing Boing looks like on it).
I sometimes use a pimped out Mac SE, which I think was the next model. It really is nice as a standalone productivity box, and some of that is precisely because it is hard to network to other distracting things.
They aren't that bad - at least no worse than floppies are, generally. If the drive works, it can re-format DOS floppies. What I did when I set up my SE was use a later Mac (8600) to collect floppy images, and then use LocalTalk / AppleShare over serial to transfer them to the SE, where I used old utilities to write the images back to fresh floppies.
The serial port can also be used for ethernet access by using a hardware LocalTalk Ethernet bridge, but it still limits one to ancient browsers. On System 7 one can probably use iCab or something else somewhat more recent, but on System 6.1.8 options are limited. I have done FTP though.