How does mining litecoin with an ASIC Miner block erupter blade look like?

Could you tell me your setup that you use? Is it still profitable?
Also I'm not really sure about alt coins :/

Hello, newbie here

I have got hooked into bitcoin and it seems good and all. But there are still questions that I seek.
1. Is it worth to invest in mining?
2. If so, what should I buy to mine?(i am really inter steel in the butterfly labs Asia's and USB block erupters)

Sorry if this has been asked, but I get mixed answers and many are outdated. All personal opinions are welcome!

Thanks for helping a newbie