It's because Ripple solves a real world issue. And they have over 120+ strategic partnerships. And slowly moving them off xCurrent onto xRapid which utilizes the XRP Ledger. Can't Wait,
Also keep an eye out on TRON, its said they have the potential to replace Ethereum. Though my thoughts are also on EOS too,
RE: Ripple (XRP) and 4 Other Coins Buffet Would Buy