People always ask if we have oil or propane. We have natural gas to the house, and sometimes when I look at the therm price (.69 cents/therm right now), I wonder if it's all worth it. Then I remember the exercise I get and the extra toys I get to play with outside. Can't beat the extra temp. in the house that wouldn't be there if I was paying for NG. I would be the one turning the T-stat down and my wife would be turning it up. With wood, it's the other way around. Can't stand the gym concept. Why waste all those extra calories doing nothing -like a hamster on a wheel. Use that energy and time actually doing something useful. Functional fitness I believe is the term they give it now. Every time I think about stopping the wood cutting, another opportunity comes along to cut and split and I can't say No.