I've previously written a few articles on the Raspberry Pi 4 as desktop replacement; the gist of my review was basically, "... yes, you can--but, would you really want to?" Don't get me wrong.
One of the big concerns with the Raspberry Pi 4 as a daily driver is, of course, whether the hardware can handle the comparable workload of a desktop computer. I've already touched lightly on overclocking the Pi and optimizing a boot disk. The final question is whether the little SBC actually has enough software support to be productive--in any effective sense.
I previously posted on the feasibility of the Raspberry Pi 4 as a desktop computer--particularly in regard to whether it could handle my web-development workflow; there are really three major issues at stake with regard to whether the Pi 4 can pull it off:
Here's some background: I'm a little bit of a tinkerer. Nothing hardcore--but, I do fetishize older computers and anything outside the fringes of mainstream technology. When my kids were in 3rd grade (they're twins), I caught wind of the Kano Computer and decided to get one for their birthday. If you're not familiar with the Kano Computer, it's a Raspberry Pi based hardware setup designed to allow kids (and tinkerers) a hands on experience with "building" and understanding a computer.