Yours is a very uninformed post.  Do you think that Saskatchewan shipping wheat all over the world is bleeding the province of all its soil and soil nutrients?  

Similarly harvesting trees, then planting a new crop to harvest in about 60 to 80 years, is also sustainable.  There are parts of BC from which we have taken 3 crops and the 4th is now growing.

Making up your mind on the basis that you once flew over the forest, leaves you with an uninformed mind.