I have hunted moose for years out of a wall tent which is actually warm and dry but one year we tried a different area and one of the guys brought in a 19 footer. That was the most comfortable hunt we ever had. That darn thing actiually had a thermostat on the furnace and it would kick in and turn off by itself and we slept like kings. The time you lose travelling from hotels and restaurants can be spent in the field or the sack. You also have to factor in money saved by not eating in restaurants ( never mind the health aspect ) and gas commuting back and forth. And when you decide you don't want it anymore you can sell it and recoup some of your investment so really the expense will not be the full purchase price. They also give you a warm place for mid day breaks which can be nice if it rains or snows all day.