Ok here's the thing, if you climb a really cool tree in the woods with no agenda (not pruning, not removing) you actually form a relationship with the tree. It's like having a favorite spot along a brook, maybe a little waterfall with mossy rocks. Same thing with a tree. It's not ignorant tree hugging, it's simply respecting something from getting to know all its awesomeness. It doesn't mean you feel guilty taking a perfectly good tree down, it means you know what you're doing, own it, and do it with respect. It's a change of perspective and not hiding from the fact that you might be killing a magnificent living thing. It's not about guilt, or it shouldn't be.