I used to be kbm exclusive but there have been some pretty good controller improvements made over the years, things like hotkey layers in Skyrim UI mods or the final fantasy MMO giving dozens of unique hotkeys on a controller, and new hardware with back buttons and shoulder buttons that keep both thumbs on the thumbsticks. Can't beat mouse for precision, but there are tradeoffs for that.
Steam Controller and Steam Deck converted me to controller. Trackpads and touch activated gyroscope are complete game changers. I still can't play first person games with a thumbstick though.