Deforestation is good or bad is not an easy question to give an answer easily. There are pros and cons to this issue. All over the world, this problem is being faced. However, in certain developed and advanced countries, the issue has been sorted out. But in underdeveloped countries or in third world countries, this issue is still not solved. There is no permanent solution found and implemented in these countries.
In the advanced countries they cut trees from the forests and take measures to grow trees as many as they cut down. This process is standardized and systematic. So regeneration of forests is almost as good as deforestation.
In countries like ours, the deforestation is going to create a problem. The re-forestation efforts are not much.
Due to deforestation the ecosystem is affected. Air gets depleted of oxygen and gets filled with Carbon dioxide. The rains are also affected in the region. Then corrosion of land is another problem. Atmospheric cooling is also due to forests. So whole mankind is affected.
If deforestation is stopped, some industries like wood based furniture industries, paper industries, other industries which take the raw materials from trees in the forests will face a shortage. Hence, they cannot function. The transport industry also will reduce in size. Then some persons may go out of jobs. Some much needed products used by people will not be available.