One, we've probably played there more times in the past ten years than any other club.
Two, it's just another football stadium in a shitehole of an area that horrendous to get to and out of whatever mode of transport you choose.
Three, it's around 200 miles from Manchester. The kick off times for games there range from at the very least problematic to get home if you take the train, to impossible as the last one will have left.
Four, it's expensive. Travel cost, tickets, possible hotel cost and food and drink in and around the stadium are extortionate and generally shite.
Five, it's just a semi final and if you're lucky enough to win it you have to do it all over again at the same place, encountering all the problems and costs in my last four points.