Way more resource should be spent on Geothermal. I would vote NO on Wind Farms given the choice.
Having some exposure to this industry I'll say that I've yet to see a geo system work properly. The math just never adds up... it sounds good in theory, but when you consider the expense of pumps & cost of running; meh. We have heating equipment that runs at 96%+ efficient out of the box fueled by natural gas.
As to the OP.. not sure where I stand yet. I think it's the same as solar: good concept, but in reality the payback isn't realistic. Like Harry says, it's all business.