This is what I think: Ethereum will survive and Ripple will die for sure. Why? Because Ripple is centralized. Just my opinion, though

I agree with you. In any case, the ethereum must survive, but the ripple must probably die.
Yes I agree with you, but it will happen for a long time. Certainly Etherum will continue to grow and we can see the development of Eherum is on a very good prospect. Many people are increasingly trusting and investing in Etherum. Like for example the ICO project that uses Etherum as a token. That will increase the volume of transactions and also increasingly create public confidence.