When do I stop taking creatine?

If I start taking creatine and I feel that its doing me good, and no harm, when am I to stop? If at all? I kind of have this same question for all supplements actually, but I use creatine for example because I see something that says it shouldn't be taken for more than 5 years.

Maybe I understand more easily that omega 3s and B can be taken forever because they are more essential. I feel like I might be getting at some sort of categorization of supplements that I don't know about. Any thoughts on this would be appreciated.