Is it ever ok to be a quitter?

I've thought about this question a lot. At first my( and probably a lot of people's)first instinct was of course not! After rethinking the question, I realized something. Sometimes things are better off quitting. What do I mean? Well what about smoking? As we all know, if someone starts smoking, they have to quit as soon as possible. Or else it badly damages your lungs. It can cause cancer. It can even cause death. If it was never ok to be a quitter then who knows how bad the population will drop. Thousands of people die every year because of smoking. We don't want that to be millions. The same goes for stealing, bullying and every other thing people were better off not doing. These are the times when you should definitely quit something. Everything else that includes the benefit of yourself or others should always be continued.