I have used GNU/Linux on a daily basis since 1997. And I must say that I am very disappointed with Linux on the desktop. I currently have two computers (that I was given by my employer) and there is a lot of trouble. On the laptop, the trackpad randomly stops working. If I kill -HUP xorg, it starts working again. The audio system has taken a lot of effort simply to keep it functional between distro updates.

The desktop machine, sadly has an nVidia card. Every time the screensaver comes on and provide credentials, it seems to operate at 1% capacity for a time period (that depends on how long I've been away from the computer).

Installing the nVidia drivers caused my machine not to boot any more, because SecureBoot was enabled. I tried to do the kernel module certificate signing, and failed (this process is a useful thing to present to someone who says Linux is ready for the desktop - good luck when grandma wants to sign kernel modules). I had to disable SecureBoot eventually, and now it nearly works, except the part about the screensaver. Linux is great, but the desktop system is a tragedy.