I'll never forget my first step into Goodneighbor. My lingering resentment still strong from the revelation that Nick Valentine's epic buildup resulted in a 50's-style old-man detective, I take a step into this new environment, ready for my next mission, and suddenly a ghoul is shooting a man trying to kill me and telling me he runs the place.
Needless to say, I fell in love immediately.
Like Garrus, Hancock is another man looking for his place in life, looking for a friend, and eternally grateful that the sole survivor accepts him for who he is.
You just have to overlook the massive addiction to drugs and violence. At least he's a nice guy, right? And he's a mayor.