Because.... why not?
Ripple is a bank coin, the point of cryptos is to bring the power of money to the people, so why not profit off of Ripple then reinvest in real cryptos.
I've recently gone full circle away from Bitcoin Cash and am in full support of the grandaddy of Crypto, Bitcoin Core among other cryptos... but yeah Bitcoin Cash and Ripple are both negative coins in my opinion for different reasons, Ripple is a bank coin, BCash is a scam. What coins are you invested?