I sometimes check in LP to avoid a check-raise against identified good players.

I sometimes check in EP to induce a bluff against my Top Pair, especially later in a tournament.

In a raised pot, it's unwise to check because of the chances my opponent has a PP that missed the flop. I don't wanna give free cards.

Against bad players, there's a better chance they'll call your flop bet with something that you can beat, unlike tight players. Checking doesn't make you any money.