Every time I get one of those deals that says I have to “upgrade” my Flash player in order to watch a video, I just blow it off.
I really, really hate Flash- especially when vendors have it. Wastes my time. (loading…loading…loading…oh, TH with it)
Yes, but nothing like getting infected with a modern virus will waste your time.
If you hate futzing with Flash, and it's a non-business computer, you can set Flash to auto-update.
If you want to reduce the page loading time, depending on your browser you may be able to set Flash (in your browser add-ons) to start only on demand. That way you can play only the Flash content you want.