My main gripe is they made everything hard to do, what used to be a one clik chore is now 2 or 3 cliks, and that is if you can find where it is !
Besides they have made the security updates auto install, does not matter if you do not want them, and once installed they can not be rolled back ! ! !
And then there are the small quirks like the single click opening for things, (I do not like that, it has been double clik as long as I can remember), the default look that seems to keep coming back for things even though you change/customize them, etc.
My biggest gripe is after an update it screws my Ethernet drivers up and I have to do a song and a dance to use the internet again ....
Oh and not to mention my Canon PCS makes the security scream because it is not able to play nice with M/softs security, and the only way to stop the naggin, is to buy a "compatible" printer ....
Way to go Gates, I said I was too old to learn Linux, but I learned how to use your garbage didn't I ?
Never say never !