Memory cards are a thing of two generations ago; it's unacceptable that we should be having them now! Especially at such a high price point...although I now have 96GB worth of Vita memory cards, so I doubt I'll need another for at least four years. xD
Provided carts don't randomly corrupt, they're much better when compared to digital games, I think. You can play them regardless of your account, keep memory card space for more important things, and it's nice to have a game collection, right? :3