I've been running a pi-hole on my home network for years and I love it, it consistently blocks about 19% of outgoing requests. Some of the benefits for us are:

  - It disables (and hides) the annoying ads on our Samsung smart TV
  - Browsing is noticeably smoother (especially recipe websites on mobile!)
  - Most front-end browser trackers are blocked
  - It's now possible to see how often apps or devices tend to phone home by just logging into the Pihole web interface
  - We're not giving (most of) our DNS activity to our ISP
  - Updating to a newer version is a breeze with docker

Some thoughts for folks considering getting one (or more):

  - I've not locked it down further with a firewall yet to force all DNS requests to go through the Pihole, but I'm planning to. 
  - I won't run a Pihole container on my UDM as it will likely mess with future updates and settings, keeping things separate feels better.
  - Sometimes I consider adding more blocklists but every time I do, something gets annoying somewhere and I usually end up reverting to the standard config.

My pet peeve has become to report login flows or frontend interactions that break when the tracking script fails to load because of my Pihole. It doesn't happen often luckily :-).

(edit, formatting)