If you don't use your app, why would anyone else?
https://twitter.com/IndyDevDan/status/1559640649665765379?s=20&t=mvCm-Zm0y7EbrqI3Xapu4g
It's a major advantage to be your first user.
I always start my products with pre MVP versions I like to call PVPs ('personal viable product' - there are several names for this).
Do you build PVPs?
That's a really good point. If you're not using your own app, why would anyone else? It's important to be your own best customer and advocate.