I second this, a monitor is useful in so many more ways! It turns your phone into a whole computer. If you use Android, you can install a terminal and be able to do all kinds of cool stuff on it.

I put a computer monitor with an HDMI to usb C adapter in my kitchen so I can plug in my phone and put on MST3K while cooking.

It’s also useful because you can use it as an external monitor for another computer.