Do you still use XP?

All the games I play in these days eschew XP entirely and use milestone and story-based leveling instead. I like not having one extra thing to track as the DM and as a player and it means you don't end up with weird in-game stuff like leveling in the middle of a dungeon or even a session. However, it also means that the players have no real idea of how close they might be to the next level -- we have a running gag in one of our campaigns that we end every session by saying "so we leveled for next session, right?"

XP is prominent in game resources -- the 2024 encounter building rules now use XP, for example -- but because I don't use it or see it being used it feels extraneous, which got me wondering how prevalent it still is.

How is leveling handled in your games? Are you still using XP? Have you tried story-based leveling and gone back to XP for some reason?