Check out the country of Haiti. It USED to be a forested country. Cutting down a few trees here and there has become a major problem for this poor country. To ME, the trees are our planet's lungs. They give us oxygen to breath. For Haiti, those trees helped keep the soil from eroding. With no trees to "hold down the soil", recent hurricane and rain storms have caused major destruction to people's lives and land. So, there really is more than one reason to "love them trees".
I live in New York where the acid rain has "killed" many, many lakes in the Adirondacks. The major cause? It's complicated. But, mainly, the larger, older electric power factories and their continuous smoke is one significant cause. Interestingly, these older power plants are from near-by states.
There used to be fish in them Adirondack lakes. . . .
I guess the population needs better education on the importance of having a healthy environment. We have only one planet to live on. The importance of a healthy environment can not be minimalized.
Our planet is showing signs of sickness that need our attention. We wouldn't ignore a sick patient, would we?!?!? I hope not. . . .