For a long time I did a lot of Arduino stuff because you could get Nano clones for less than 1 EUR - which pretty much makes them throwaway, if you mess up.

I recently was doing a few projects with the Arduino Every, which is a nice board - but it's just too expensive. I did fry a few - so now I'm just using them as development board (the additional UARTs help a lot there), and for the actual project still use Nanos where I no longer care about the serial debug output, and therefore am fine with just the one serial port.