As far as I know these coins are used a method of payment and the the usage they have is merchants accepting them.as payments. I personally have learnt to stay away from ltc.Not saying it's bad for investment , just my personal opinion.
we have the same idea regarding litecoin. it is used to transfer funds between individuals or businesses without the need for an intermediary such as a bank or payment processing service. however, it not that bad to put some investment in ltc since this is for long term,those who had a Litecoin investment for the whole year still would have secured a 40 per cent return.