I haven't tinkered much at all. In fact, among Linux users, I'm probably among the more lazy because I prefer things to "just work" here, too. My latest problem was having to switch from Debian Squeeze to another distro because I upgraded my mobo and didn't want to use Sid to get my ethernet working. I found that openSUSE's KDE Live CD seemed quite smooth but it's not particularly stable. Now this could be the mobo's fault and/or the ATI 4670HD using the FGLRX-LEGACY driver from geeko.ioda.net (you talk to some Linux users and they shit all over ATI: "ATIs are shit, get a NVidia", yet others are quite the opposite). I have a Dell U2711 LCD screen, and thought perhaps it's too big, so I changed a couple of settings in Catalyst (enabled Tear Free and reduced DVI frequency) and it seems a little more stable, with less complete X lockups, but they still occur several times a week.
But I'm just sick of the problems and the tinkering required to get it stable. KDE sometimes takes 2 minutes to let me start an application after login, too. That's another thing I don't care to get to the bottom of, and Nepomuk is just irritating shite. Playing a video sometimes results in complete video corruption such that I have to log off and on again. And Dolphin hangs if I forget to unmount a samba share before switching off the computer on which it resides.
My brother/mother recently got onto Skype to do video calls with my nephew and so I found a HOWTO and installed it. Seemed to go well, except it won't listen to my microphone or pick up my webcam. I've never seen a distro yet that wouldn't detect a webcam, so this is a first. Yet another issue that could take hours of fiddling. Linux's many sound systems are a joke. More Balkanisation to keep the control freaks happy (see: http://xkcd.com/927/). Skanlite is complete crap, too. I eventually installed Simple Scan (remembering it as a nice, no fuss, scanning program from my good old Ubuntu 10.04 days). Why have a scanning program on offer if it's complete garbage? It doesn't make sense.
Many of my MP3s show up as being 27:03:11 in length in Audacious. That's quite bizarre, since I ripped them from my very own CDs in Linux.
I hope this conveys some of the reasons why I'm done with Linux. I know I'm done enumerating my problems with it.