Fair, definitely depends on the cat(s). Our cats will frequently decide to start rough-housing on the bed at 3am, so unfortunately we have to keep them out of the bedroom at night lest our sleep quality suffers drastically. They also need to be kept out for "adult playtime", because otherwise they like to get involved and that isn't the vibe we're going for.
The primary bedroom's cat door technically is lockable but I don't know why I'd ever lock it!
The lower-level bedroom's cat door doesn't have a lock, but you could easily put something heavy in front of the door to block it.