[Lammy]

Personally I trust my ISP DNS a hell of a lot more than Google/Cloudflare. Why would I want to give them even more data about me?

[jen20]

Wow, where do you live?! Across the US and UK, I’ve consistently found home-ISP-supplied DNS to be slow, spammy and unreliable.

[nyx_]

I've had ISP DNS servers that redirect NXDOMAIN responses to spammy "search" pages full of sponsored crap and banner ads.

There's always OpenNIC, DNS.watch, or Quad9 if you're after something that isn't operated by a creepy megacorp.