I like it, it serves a purpose for a convenient quick fix.
I try to avoid the greasier stuff. Am quite taken with their sausage McMuffins and hash browns but the amount of grease which comes out does put me off though not so fussed for a random one off (find the same with Greggs pasties and such too). It's got a high salt content too so not something I'd have too often.
I left a bar last night starving and in need of a quick fix so grabbed a quick burger, fries and an apple pie. Quick, easy and convenient.
Not much of a fan of Burger King, used to work there and although the burgers themselves are ok and you can get a load of salad in them, I've never been keen on their fries.