High-risk, high-reward.
In my opinion it is more probable for Dogecoin to gain half of bitcoin market cap, than for bitcoin to show the same amount of growth in the same period of time.
But as always, dont invest more than you can afford to lose.https://bitcointalk.org/index.php?topic=800004.0;all You are delusional if you think a coin with no hard cap is going to ever gain half of bitcoin's marketcap.
As for OP Litecoin will never die as it's on every major exchange in China. Underestimating Litecoin's popularity in China will cause you great pain in the future.