Is it worth investing at this all time high?
Was ethereum worth it when it was $48?
sadly the same thing can not happen with litecoin because for the most part litecoin is a decentralized crypto currency which does not have the advertising funds of centralized ethereum! and it doesn't have the funds dedicated for pumping it either.
also the only thing making litecoin relevant was SegWit and all the rest that came with it and that won't last long since bitcoin SegWit activation has reached 75% support in past 24 hours...