I have owned my plane for 24 years. I have never had it hangared. It has lived in Mississippi, Georgia, suburban DC, Connecticut, and California, with a cover on it when it's not flying. In 24 years, there are perhaps 15 days where a hangar would have saved me considerable time preheating the engine or defrosting the plane. It also maybe would have prevented birds from making a next in the rear fuselage, which they did once, and deer from chewing off a couple of static wicks. The difference between hangar rental fees and tiedown rental fees is significant ($350/month) at my airport. I'd rather fill my gas tanks to the brim once a month with the money I'm saving. One of the magazines ran an analysis many years ago about the value of a hangar vs. the value of the difference in annual rental fees. Tiedowns won.
Back in the days when I owned a car (15 years ago), I parked it outside, too, not in a garage. The car, like the plane, did not rust into oblivion.
Don't get me wrong. If you've got a hangar, good for you. Some of my best friends have hangars. But don't be scared to park your plane outside.