Why you do still such an old OS like windows 7
Reminds me of all them XP users that took years & years to upgrade...(I bet there still some die hard XP users out there that refuse to upgrade)
Here is the thing - Windows 8 was well not great, I wouldn't say awful but a few things are a step backwards in terms of how fleshed out the features are compared to 7 and other things are a bit hit and miss then personally I find anything other than a start menu of the traditional style intrusive when I'm working with a lot of different applications, etc.
I would rather use Windows 8 than 10 and I never thought there would be the day I'd say I'd rather use 8 than anything.
Windows 10 I find there is way too much stuff that doesn't respect the end user - you are forced to use it on MS's terms and that simply isn't the purpose of an operating system - if you actually make proper use of it on a tablet for instance its quite frustrating as it will ignore that its a portable platform that you might pick up and use at any time when trying to do updates, has a lot of options for things like connection metering heavily restricted and half the times has no accommodation for the fact the system might be (a) running on battery (b) bandwidth limited.
Then there is that it looks bland as **** and personally I find it fatiguing visually with little to break up the monotony of it if I'm using the PC for longer sessions while 7 even if the overly bevelled 3D look is a bit dated at least has a nice polished aesthetic that is easy on the eyes.
Windows 10 has the potential to be a great OS but they need to put some power back into the hands of the end user in relation to how privacy stuff, windows update, etc. works - most of the dumb excuses for not doing so have increasingly been proved to be dumb - it hasn't proved to be the security bonus some have eulogised, it hasn't proved to simply support as some have eulogised (as can be seen with them stopping support for older hardware past certain updates) which was a silly argument in the first place, it has resulted in a trail of issues with regard to compatibility, etc. after updates especially the bigger ones so all the stuff about how that won't be an issue due to the testing they will be doing is as BS as it sounded - continuing with it is just stupid obstinance at this point.
Then some better build in facilitation for theming, etc. would go a long way - while I can see the purpose of the default look in terms of being appropriate for business environments and does actually look great on the Windows Mobile platform its just nasty if you have an eye for aesthetics under other scenarios - and while if you use it on Windows Mobile you can understand where they were going with some of it generally it doesn't make much sense on a desktop PC and even less so now that platform is basically obsolete.