West Poison Au Yeung Fung might have adopted Yeung Gor as his surrogate son, and the two were as affectionate as any biological father and son pairing would be, but nevertheless, they didn't spend much time together. Au Yeung Fung never really raised Yeung Gor (the streets did, and to a lesser extent, Little Dragon Girl did).
But what if Au Yeung Fung had actually raised Yeung Gor? Being mentally unwell, could he have provided for his son? I know that with Au Yeung Fung's martial arts skill, he could definitely protect Yeung Gor from anybody who might try to bully him (and of course, teach him great martial arts skills), but beyond that, could he feed/clothe/shelter/educate Yeung Gor? What kind of man would Yeung Gor grown to have been if raised by Au Yeung Fung (the crazy, kindhearted Au Yeung Fung of ROCH, not the coldblooded villain of LOCH)?