Bruce Springsteen
Member
Not that I disagree entirely with the above but the benefits of the flip side-- that it's somewhat "offseason" can be pretty compelling. If you don't mind the cold and walking around in the cold, you'll have a much easier time seeing everything that you may want to see and doing everything you may want to do. Not to mention that it could be significantly cheaper to do it. I'd go for it, myself.
Even during peak times it's not exactly hard to see anything, again, if the savings are dramatic enough and the person doesn't mind being out in the cold all day I say go for it. But I tell my friends and family to wait till it's warmer to visit