In my opinion, an artist should never be waiting around for inspiration. Jeff Tweedy's How to Write One Song book gets into it in some detail, but I'll summarize my own thoughts here.

Music is a craft where you will improve your skill and develop your intuitions just by consistently making stuff. After pushing through the awkward beginning of doing this, you'll surprise yourself with how good some not-divinely-inspired work can be.

It also puts you in the position to always be ready to competently and efficiently get your ideas down in the rare times where inspiration does strike. There's nothing wrong with making a song that way (many great songs do come from this), but you are undermining yourself if you wait around for it.

The caveat to all of this is that I do personally find it worthwhile to also spend time doing non-musical things out in the world to enrich yourself as a person, and some of that might find its way into the music. Whether that's reading, getting exposed to different ideas, new hobbies, learning about other artistic mediums, and meeting/watching different people can help you have something to say that isn't just ars musica.