Like it a lot. It’s Firefox without ever having to worry about an update sneaking in more telemetry.

Switched after being irritated by the ads in url autocomplete getting turned back on after an update. Librewolf has a learning curve if you want to keep resist fingerprinting on but if you have trubs, just turn it off. Otherwise, no regerts

It's great, it's not really more lightweight when looking at CPU/RAM usage, but it includes less crap by default. For example, it doesn't come with Pocket integration, Sponsored sites, Firefox View or even Firefox Sync. But you can enable Sync in the settings if you want to use it. But it's much better for privacy, and comes with uBlock Origin pre-installed.