How do I feel about trees...trees are good?
Not cutting down forests means not destroying the habitats for the animals that live in the forest, so I say keep the trees.
Aside from lumber, most of the things that trees are used to make can be made from hemp. Trees take decades to grow, hemp takes one growing season. I'm not some crazy naturist, although I do value nature, or some crazy neo-hippie, but practically speaking, we don't need trees to produce many things that we currently use trees to make.