When canonical announced Mir, i was excited and thought let's try how this display server differs to X window system, in case if it didn't work to my taste, you can always switch back or try other ubuntu derivatives. Why need to hate it? It's free, you can try it or leave it.

When it comes to Open Source Software, hate is not the option, you use it or take the Source Code to change according to your needs, but if you are a common user just change the distro or change your opinion.

This is why you should Love Linux or any Open Source/Free Software : https://goo.gl/eP6sy