be sure to post why.

Is this including the console manufacturers? If so this will probably be a pretty boring thread.

Well for publisher my least is probably EA and my most is probably hmm idk its a tie between NIS and Xseed.  Honorable mention to Ubisoft.

I would say least favourite is Microsoft. I could vote for someone else who just milk their games but they if dont have anything I care about why should I care. Microsoft on the other hand whilst they make awesome games they no longer make Banjo, Conker or Jet Force Gemini. The thought of a true 3D platformer Banjo on XBO is just crazy levels of awesome.
As for favourite I would go with Square Enix, Nintendo was a close second. See unlike most people Ive enjoyed FF13 and 13-2. I enjoyed the KH games on DS. They came out with some of the best western developed games this gen with Tomb Raider, Hitman, Deus Ex and Sleeping Dogs. Then there was all those awesome more niche games like TWEWY, FF12: Revenant Wings, Nier, Drakengaurd 3. And last but not least they have made so many of their classics available to new gamers via remakes, VC, PSN etc.

Favourite publisher is either Sony(because Uncharted 2,3 and TLoU are my top 3 games of this gen/plus GOW,Lbp e.t.c.) or SquareEnix (cause Kingdom Hearts is my favourite series of all time.Also there is Crisis Core and Zak is my fav character.I also liked FFXIII) but because it's been a while since SE did something ultra amazing I'll probaby go with Sony.Namco is also great cause Dark Souls is my 4th fav game of this gen and Ni No Kuni is sweeet.That's all.

Squaresoft/SquareEnix most loved and most hated. That's true love i guess.

Perhaps to make this more interesting we should exclude hardware manufacturers?

Lol, 90% of all the games I play are published by Nintendo, so yeah... :D I suppose Ubi would be the second place, since the old Square ain't cutting it for me anymore. SCE ain't so bad either, Ratchet and Sly is amazing.

EA is probably the least, although I do not buy their games anymore.

Favorite has to be Sony I mean over half my library (not counting free plus games) is SCE published games. Honorable mention to Nintendo since about 100% of my games for Nintendo systems have been first party though I have bought less total games compared to SCE.

I really have not liked any of the EA games I've tried recently and seeing what happened to Insomniac and Bioware has made me really not like them. I don't think they're the worst company in America just the worst in gaming.

most loved = everyone that is not in my most hated list (all those japanese companies that still publish REAL GAMES)

okay publishers = Ubisoft

most hated = Activision and EA (mainstream cancer)
They are the reason the videogame community is less and less gamers and more mainstreamers (just watch Idiocracy and then you know how the videogame community is mutating and how I feel about it)