Age has a lot to do with it. Seems like once the magic 50 comes around that cold seems a lot colder and I can't take it as well, even with the newer clothing materials. However, in my 20's,30's,40's you could not keep me from hunting no matter what! Weather didn't matter. Sometimes for duck and goose hunting the worse you get the better the hunting. Late season muzzleloading can give you some pretty cold stuff in the midwest, and if your traveling you don't stay in the motel, camp, you hunt. In the UP of Michigan you might have to deal with 4' of snow and really cold temps. At some point deer have to feed, whether you are in your stand or home thats your choise.