You have no idea why you should limit your time? Even if you are in your free time like in a whole day due to holiday, will you spend your whole free day to play slots if your balance allow it? Time limit, money limit, and other limit is part of discipline in gambling. If you ignore this and you think that it is nonsense, means that you do not care about yourself.
No, I don't care about myself. I can just spin the slots for hours at the minimum bet. Is there anything wrong with that? I think I'm not the only one who does this. Why immediately raise the bet and finish the game in a few minutes? That certainly won't bring any pleasure. And that's exactly why I came to play, not to be sad. That's why I try to stretch out the moment of the game as long as possible.