In my opinion, 1.9 is OKAY. The only things I hate are the new Attack Speed mechanics, and that Diamond Armor and God Apples got nerfed. The things I just mentioned will only be a problem in singleplayer, which I personally never play on anymore except on my custom mod packs. The things I like about 1.9:
A slightly altered End dimension!
An Attack Speed NBT Tag to fix the Attack Speed of tools and weapons!
New Lingering Potion Type!
1.9 isn't bad. Put it this way: In multiplayer, for the most part they will make everything look like the update never existed except for the decoration from 1.9 and that stuff. The combat of 1.9 won't be present on most big servers most likely. You just have to look for the good in 1.9 and then you will realize how good it is also due to the fact of you being able to opt out of the new features that enrage you.