Why do banks want XRP?

I'm curious, why do banks seem to have such a strong interest in XRP? It's just one of many cryptocurrencies out there. What makes it special? Is it just because of its speed and efficiency, or is there something else? I've heard it's used for cross-border payments, but why is that so important? And why would banks want to use a decentralized currency like XRP instead of their own traditional systems? I'm just trying to understand the bigger picture here. Could you please elaborate?