While Rodin Core does not support strings, some libraries do. Users of these libraries currently have no way to easily input string literals (they have to use things like integral ASCII codes, which is quite unreadable).
Therefore, it would be simpler for them if the parser could accept string literals. However, it may not be so easy to implement as it would require either to add a builtin string type in Rodin, or to find a way to allow a third-party plug-in to handle it.
There is a similar request for real numbers.