[estimator7292]

RPis just aren't interesting. It's a full fat computer on a small board that does everything a normal computer does, just small.

PCs just aren't interesting because they're all fundamentally the same thing and are capable of the same set of tasks.

RPis aren't interesting because 99.9999% of projects they're put in are better served by a microcontroller and not an entire linux system. If not just a 555. It's boring to throw an entire linux computer into a project. You've utterly given up on the hardware and have assumed you can do everything with software.

[SAI_Peregrinus]

RPis (and similar) are interesting because they're a tiny full-fat Linux computer with user-accessible GPIOs. That's the only special thing about them. There are other tiny Linux computers, but RPi-like computers have GPIOs, so they can use communication protocols that don't have standard external headers like I2C & SPI, switch relays, etc. They're interesting precisely because they can do what a microcontroller can do, while still being a full Linux system.

I mostly use them for situations where I'd otherwise need a small Linux computer and a microcontroller together, e.g. for CAN + DoIP simulation with SCPI control of test equipment over Ethernet & relay control of a vibration table.