Pretty really isn't the problem and hasn't been for a very long time. You can make Linux IMHO prettier than a Mac or Windows pretty easily.
The problem is having to tinker. Tinkering is fine if you've got the time and enjoy it, but if you just need your computer to always "just work" this is a problem. Both Linux and Windows strike out for me here. I use a Mac because I almost never have to mess with it... I mean sometimes a year can go by between times when I have to actually mess with my machine. Nothing else does that.
I'm not sure why you think you "have to tinker". I run Ubuntu 14.04 and use i3 window manager. I haven't "tinkered" with the setup in about a year-and-a-half, dating back to when I installed i3 shortly after I got the my last computer. The default Unity DE is nice, too. I don't use it, but I could have used it all this time, can't imagine what "tinkering" would be required.
I have to tinker all the time because hw compatibility still sucks. Wifi, sound, video-cards often require tinkering to get them working, especially after upgrading. They are a lot better than they used to be, but they still have a ways to go.
I've had zero driver issues on my Asus UX305 laptop. Even if I had, those issues are generally solved once on installation, not continually tinkered with.
I've had quite a few computers that didn't have any problems and worked right out of the box. That doesn't mean there aren't still problems with other computers.
1: https://www.reddit.com/r/unixporn/