I have used numerous MS Apps with no problems, but I understand the hatred from old Windows 7 users, it's the old Vista story all over again.
Oh well.. "One mans meat is another mans poison"..
On somethings I'm OCD. As an example it bugs the heck out of me to see the exclamation mark in device manager even when I don't notice any problems running my computer. It bugs me when I can't uninstall a program or app. I learn to ignore it but I still don't like it.
What is it with all this blind hatred for anything new in Windows, Linux is absolutely chock a block with apps, I don't hear people complaining about them.
When you people buy a car do you rip out the sound system, the air conditioner, the windscreen wipers, the indicators, the electric windows, the automatic door locks.