Is wood the fuel of the future?

The burning of fossil fuels is reported to be an air and water pollutant according to environmemtalists. Wood is an environmentally friendly fuel, clean to burn on open fires and could also be used in industrial plants in the future. Unlike fossil fuels, wood contains no toxins, and during the burning process, creates very little ash compared to coal. Also, much better and safer to work in a forest than down a mine.
Wood should be the fuel of the future and could be a very lucrative industry for, say the USA and parts of Europe who have vast areas on which they can plant fast growing trees such as pine. Pine and other wood have added health benefits, containing healing sap or tar which can be extracted and used therapeutically leaving the wood dry enough to burn immediately.