> How I Met Your Mother 9 seasons Luckily the last season only has 22 episodes! A lot of series jump the shark of they get dragged out for long. Even worse, i

> How I Met Your Mother 9 seasons Luckily the last season only has 22 episodes! A lot of series jump the shark of they get dragged out for long. Even worse, if it's a slow decline, it kills rewatchability. Some manage, but it goes wrong more often than not. And especially if your concept does not lend itself to a lot of seasons (like Chernobyl, for example), you should stop while it's still good.