I'd be very surprised if United didn't comfortably take this poll, then again it's an international forum, so we'll see.
Why do I hate United? well that's easy. I took an interest in football when a mate invited me to a Tranmere game as a youngster. My Dad, a lifelong red, realised he had missed the boat WRT getting me to follow them across the river, so set about indoctrinating me of the evils of Manchester United. It was 1991. I did as I was told and hated them, it's instilled in me, and obviously it's been helped by the fact that they have ****ing won everything since I started watching footy; I think they have only had about 3 trophyless years in that whole time.
Plus Alex Ferguson is a moaning Scottish ****
Plus over the years they have had the rub of the green with referees
Plus they always used to score in the 97th minute
Eric Cantona, Roy Keane
Cristiano Ronaldo, Wayne Rooney
They actually once printed "THEATRE OF DREAMS" on their home strip
They blamed their kit when losing to Southampton
Everyone in ****hole areas without a footy team support them, worse than that, people in areas with footy teams in the FLC/L1/L2 support United instead
Alex Ferguson got knighted off one European Cup, Paisley and Clough were never honoured in that way
I could go on