[mlagoo]

You should definitely adjust your raises to suit your game. If you normally raise 3xBB, and 8 people are seeing the flop anyway, it may be time to lift your raise. If your 3xBB raise drives everyone out so you get on action on your Kings, maybe it's time to drop to 2.5xBB or even a minraise (ew).

But yeah, there's certainly no reason to stubbornly stick to the 3xBB rule if it isn't effective. It's just, I guess historically, been the most effective raise to get value on good hands while keeping the number of players to the flop reasonable. If it isn't accomplishing those things, you should change it.