I don't hate the Daily Mail because it's fashionable on MN - I find it a hilarious concept people think I worry about the reading preferences of one of many websites I frequent anonymously.
My MAJOR issue is that pretends it's a broadsheet when it's a tabloid, ie it expects to be taken seriously as a news organ when in fact it peddles opinion dressed up as fact. Broadsheets tend to check their facts and give right of reply. Tabloids couldn't give a monkey fuck, and nor could the DM. However because it pretends that it's a broadsheet, many otherwise intelligent people take stories like "muslim-only loos" as fact.
It lies and lies and lies again. It ruins lives. It bludgeons into the ground anyone who attempts to correct factual inaccuracies, with the use of lawyers.
If you really want to know why I (and many people) think that the DM, Sun, Star etc etc are scum, just read the revelations of the Leveson inquiry. In fact I'm amazed more people aren't interested - it's actual under-oath proof that truth is completely irrelevant when tabloids are searching for a story, that the only thing that matters is whether or not it will sell papers.
I will give it two things. 1) it's stunningly readable. 2) it is absolutely brilliant at what it does, which is to wind people up, frighten them, and set them off to make Britain a tiny bit more racist, misogynist and hateful.