I understand that using a different DAW can switch to a different frame of mind, but to use it as a source of inspiration tells me that your sources weren't stable or strong to begin with.

Music is art, and art is expression. If you've got nothing to express, whether the idea is complex or simple, then there's no point in writing. Go out and find some inspiration, and it will find you. Live your life, go on adventures, think about things you care about--art can be about anything: people, places, events, experiences, feelings, politics, history, comedy, stories, etc. The only thing it shouldn't be about is nothing, and even then it's always something.

I mostly agree with what's already said, but sometimes forcing yourself to make something is better than nothing. Don't rely on motivation to help you make music; you need discipline. You may not come out with the best song you've ever written without the inspiration, but at least you'll have something. Learn and apply a technique you've never used before, practice something you're bad at, restrict yourself to only 5 different sounds, or learn/practice sound design. Cool things can happen when you challenge yourself.

There have been a few sessions where I had no inspiration but I noodled around with my DAW anyway. Some of those sessions were shit, but a few have gone on to be full tracks. Inspiration may not come to you all the time, but sometimes you have to actively seek it out.

This isn't to say that you have to be in your DAW all the time. Take a breather and experience new things to revive your inspiration. However, I do think that in order to keep improving, you need to make the effort even when you don't feel like it or if you're not inspired.