I believe there is nothing to argue in here, we all know that XRP will never replace Bitcoin, nor be called the next Bitcoin due to many reasons stated by the earlier reply.  I also think someone is shilling XRP, maybe the dev team or the supporters have a plan to pump the price of this altcoin. 

I think if there is any hint for this altcoin to pump, we should take advantage of the opportunity and sell it the moment we find a profit, after all, this kind of altcoin is just created to make money (just look how huge the developer team is cashing out every month).

Anyway, Bitcoin is only one, and no cryptocurrency will ever be the next Bitcoin. If there is something to replace Bitcoin, it would be another kind of financial technology, which is way more advanced and user-friendly.

 
Anyway, I somehow agree with @Charles-Tim that USDT may overtake both in term of being used as payment option.