To keep the coin or not, its up to you to decide, but seeing how Ripple is promoting his coin, I think its worth keeping in case!
Ripple is one of the most promising coin and I'm not saying this without a basis.
I'm pretty sure holders of XRP despite it's decrease last year is still in profit now, we can rarely see this type of coins
which has billions of supply that reaches at least $1, it's a hidden gem IMO.
Now, if you still have doubt on the future of XRP, better study it's history and it will impress you.