i'm of the opinion that there are different bass ceilings we're all chasing. i would wager that most of us here aren't pushing our subs to their breaking point every time we watch a movie. however if you're specifically looking to do such a thing and are achieving it by throwing on some bass torture tests with "music" (e.g. bassotronics, techmaster p.e.b., etc.) or specific film sequences(e.g., eot intro, blade runner 49, underwater, ready player one, etc.) then the answer is quite literally it's never enough.
i'd say it's better to have more bass and not need it (most of the time), but to have it when called upon versus not having enough and pushing the equipment you do have too hard too often.
1800ft³ | 7.1.6 | 157" at/cw | hc2150 | x4300h | mtm-210t | 4000ulf | me650c | av5 | avbp2 | rialto | velvet | plex