LTC (like all currecies) hold a perceived value. For the last 6 months or so, that has been about 7cents+ USD with it's respective ups and downs. I have sold and purchased at different times for that amount in BTC. It has been a great way of trading and investing in BTC. I don't see LTC folding, but I do see it having days were it might drop low. I wouldn't worry. I believe Litecoin's health, and use, moves with the health of bitcoin.
I was an early adopter and dumped my first litecoin hoard in May 2012 and have regreted it since. I've been holding on to my LTC hoard now, and won't be selling for some time. I wouldn't sell my BTC hoard either. I believe they are both great investments, although Litecoin might be riskier. HOWEVER, buying 10,000 litecoins could yield a lot more profit for you if the litecoin market jumps. Dropped out of the mining game this week, and will only be buying Bitcoin in the future. I'll still be cashing in at least 30% of that for Litecoin as long as the market/network retains interest & health.
My investments go like this: 50% Bitcoin, 30%Litecoin, 20% Silver/Copper/Other metals & investments. I also have a handfull of PPC, but I'm not willing to invest much more than my few bitcoin worth. I feel like it is TOO risky. There is high risk in all p2p currencies. One law passed, MtGox gets hacked, etc...etc... and the price could crash without ever really going up again. Really, the safest investment you can make right now is pizza & beer. You should see my nestegg of that spilling over my belt