We have got to get away from this idea that it is wrong to cut down trees, if you re-plant the trees that we fell (or more), we are providing building material for a future generation. Someone in the past planted the trees which we are felling today, let us respect the fact that our children will also need material for building their homes and plant more trees today.
The only way that we will ensure that it is economical for them is to make trees plentiful...after all, nature does the work for us.