Do lounges have a time limit?

Do airport lounges have a time limit? Ugh, it's SO annoying, right? Lounge access is always such a confusing mess! I mean, three hours is the usual, they say. Three hours to actually relax? Ha! More like three hours of frantic snacking, desperately trying to get my money's worth before the dreaded "time's up!" Some places are a bit more chill, I guess. I remember once, in Heathrow, I practically lived in their lounge for five hours—bliss! But then, there was that awful place in Frankfurt… two hours, and they were practically shooing people out the door. Seriously, I felt like a stray cat being chased away from a food bowl. It's just... the whole thing kills the vibe, you know? You're supposed to be unwinding before a flight, not constantly glancing at your watch, stressed about how many more minutes you have left. It just makes the whole experience feel… cheap? Is that weird? Like, I paid for this, I should be able to enjoy it without feeling pressured. I think maybe they should just do away with time limits and trust people. Or, at least, give me a warning before they start giving me the evil eye... ????