Litecoin is on an upward trend, so as Bitcoin
http://bit.ly/1x5QyYQ Do you think both these coin's price trend in anyway related?
Altcoins are related to the Bitcoin price, they are highly correlated.
But people still invest in altcoins, thinking some altcoin is going to outperform Bitcoin.

Its possible that some altcoins might have a chance to outperform Bitcoin, but i hightly doubt it, however there is far more innovation going on in the alt community, its just a pity they couldnt all work together to make something better instead of branching out in all directions.
Bitcoin is a dinosaur with little innovation.
NXT is the only serious competition that BTC will face, and probably has the highest chance of anything topping BTC.
If not, it will come a very close second to BTC, but i dont actually consider NXT an alt at all.