I have a theory that certain beers are like coriander in that different people are genetically disposed to tasting them completely differently. I honestly can't understand why any cask beer drinker wouldn't like Abbott, and I can even enjoy a couple of pints of Doom Bar.
It's sour, over-hopped, stuff that gets my goat; Shepherd Neame are a frequent offender here although Spitfire's ok. Fortunately over the last 20 or so years it seems that the fizz-piss makers have wrestled the over-hopping baton from the cask outfits so it's easier to avoid. Everything produced by Camden Town Brewery, for example, tastes to me like it's made of lemons.