I suppose I could survive an ice age.... My house is a smallish ranch, well insulated. I don't have a rifle, so I would have a slight disadvantage with hunting, but my 357 magnum is pretty accurate for a handgun ... any animal within about 15-20 yeards should take only 1 or 2 shots, and I've got a couple hundred rounds of ammo .... My snowmobiles would provide mobility If I needed speed or towing power if the roads got to the point that my subaru was grounded. I have 2 of the same model snowmobile, so I could use the "worse one" as a parts machine when things start going bad .... to work outside, without freezing to death, I could erect a large snowfort and build a bonfire inside .... fuel would obviously be a major concern. Due to the scarcity of fuel, I'd probably stick to traveling on foot, cross country skiis or snowshoes ... I have 4 x 5 gallon gas cans (2 are premixed with 2 stroke oil), and a 2.5 gallon can, and I would make it last.... Also have several trees on my property, and over 200 acres of forest preserve under a mile away ...
I think the first couple of months of an ice age would sort of be fun, like a giant blizzard, though once reality set in, it would be major suckage ....