It depends on the use case. For instance you open a socket, write there any value you have without serialization, read it in the other side, data transfer done.

The convenience of not having to marshal data over a network is certainly a use case. But I'll admit that two of the worst programs I ever saw were written in Perl and TCL. Somehow just a big jumble of inscrutable regexes.

When "everything is a string" then you have no choice but to literally treat everything as a string. Painful. Very cool project though.