There are different kinds of memes. You have some that make you chuckle when you first view them, and then roll your eyes when you see them again. These have a low meme longevity.
Then you have some that are timeless, but those are few and far between. And even those, you must protect from being overused, so you can never forget just how brilliant the memes was in the first place.
So in the struggle to keep memes fresh, it's important to constantly view new material to stay on the tippity top of your meme game. This is the duty of the meme connoisseur.