If GGG Can Hand Pick His Opponents Why Cant Floyd Fight Berto?

I can't tell if you're trolling, stupid, or simply uninformed. Regardless, your argument is an Unwarranted Assumption Fallacy. The error [from your subject] being that GGG "hand picks" opponents. He has to take what's available; guys who will actually fight him. They've tried many times to get good opponents.
Golovkin was supposed to fight Pirog in his HBO debut back when Pirog was big and being ducked a lot himself, but Pirog injured his back and had to retire. Sturm refused multiple fights with GGG when Sturm was hot (and being protected by his promoter). Geale turned down multiple fights with GGG, once right after beating Sturm in a unification. Matinez's promoter DiBella turned down fights with Golovkin going back years. Cotto wants no part of Golovkin, nor does Lemiuex, despite Oscar promising via a Tweet that GGG vs Lemiuex would happen before the end of this year and now has backtracked on that promise. Canelo wants no part of GGG. Oscar says maybe in 2017 or beyond (i.e. once GGG leaves his prime behind). Chavez Jr. turned down a two fight deal of between 12 and 17 million (depending on whether he won or lost to GGG), instead of fighting Golovkin... And Jr. has made nowhere close to that money since turning it down, when he was supposedly turning it down for better money. I could go on, but the point is: they've been trying and trying to get good fights, not "hand picking", but get turned down--ducked.
Floyd can get anyone he chooses to sign a contract and fight him. He picks them, anyone, and they fight him. Floyd can fight the best of the best fighters if he wanted. Golovkin only dreams of that luxury. GGG is stuck fighting only those who will actually fight him, which is few and far between.
Now, personally, I don't care who Floyd fights. He's earned the right to pick who he wants. I'll watch or I won't. It's simple. I personally thought it would have been cool for him to beat Brook and gain the Undisputed status before retiring, but regardless, I'm only pointing out that these idiotic arguments such as yours are just foolish and uninformed.

 

Golovkin is Cotto's WBC mandatory, but refuses to fight Golovkin and will pay Golovkin step aside money. Golovkin will the the mandatory for the winner of the Cotto/Alvarez fight, but Cotto or Alvarez will give up the 160 lb. title rather than fight Golovkin..................Golovkin has tried to get Quillin into a ring, he wants all the other 160 lb. champions, yet he can't get them into a ring.................Golovkin is the best 160 lb. champion. The others refuse to fight him because he is so good...............