There was a moment in time in which litecoin was seen by the community with very good eyes and many thought that bitcoin will become a store of value while litecoin will be in fact the coin of use for your regular transactions, but it seems that is never going to happen and such the biggest use case for litecoin is to be a sandbox for bitcoin, that way we can see if a particular update in the code bitcoin will work and if it does then that code can be added to bitcoin with no issue.