Unless you have a need for using the GPIO pins or the camera interface, I really don't see a compelling use case for SBCs in general.
I am happily using a network of Raspberry Pis to control my model railroad and I have track sensors connected to the GPIO pins.
I have also used a Raspberry to acquire data from a CO2 sensor via USB and upload to a server. I put a few of them around my house and discovered that some rooms had disconcertingly high levels.
What I have _not_ done with Raspberry Pi is to surf the web!