I would rather vote for other coins, but I am sure that while lots of other coins die, bitcoin will be more powerful day by day. But whether it is going to be number one payment method is arguable.
which other coin you know that is used as a "currency" or a payment method? none!
well to be fair there are some usages for some coins like Litecoin but that is all, they are not big enough to be considered real usage. and these altcoins have been around long enough to have some real usage but they do not have it yet and there is no reason for that to change in the future either.
it is a sad truth but unfortunately altcoins will remain speculative tools for a very long time because they are designed for that purpose not for being a currency purpose.
but bitcoin is designed to be a currency first then it turned into speculative tool, that is why it is always growing despite all the volatility and all the drops,...
I agree, only Bitcoin has been proving itself as a digital currency and can make an alternative to fiat money one day. Though, in my opinion, it's too far from being a payment gateway whatsoever.