Why is Collingwood so hated?

it goes back over 100 years when if you lived in collingwood you played and barracked for collingwood ,same as carlton ,richmond footscray ,nth melbourne, melbourne,fitzroy,hawthorn,south melbourne,ect ect,My brother inlaws Grand father lived in parkville (next to carlton) played 1 year at the blues and was told he was too small and two slow to play vfl football in the 20s/30s, Moved to abbottsford next to collingwood the played 273 game for collingwood played in 5 premiship sides including 4 in a row 27/28/29/30 won the best and fairist 1930 and is a member of collingwoods team of the centre on the half back flank. But where the riverly comes from is he had to move suburbs to play for collingwood. That would not happen now but this is where the hatred comes from.