I remember when I first started working at this corporation, this colleague of mine was chased around by a very hot waiter at one of the restaurants in the building but he continued to reject her purely due to her position, which baffled me at that time and I only understood why much later.
It's the same story of those in the hood that make it but NEVER come back to it! It's a catch 22 trap which the British understood very well as a no win situation! You go back to help, they will diss you for being an arrogant sell out, if you don't go back the same happens anyway.
I had my first experience of this working abroad were I was helping out some Somali refugees I met, buying them books and materials to help them learn programming and taking time out to teach them whilst taking them out regularly for brotherhood, but I come to learn that these people used to slander me day and night and even burned those books but told me someone stole them!