I have a 90-100 foot sugar maple that is the highlight of my backyard. I really want to extend the life of this tree as long as possible. I also see some signs of problems, and my home (and bedroom) are very close to this tree. I would appreciate your opinion on 1) the health of this tree, 2) what I can do (whatever the cost) to extend it's life and 3) if it is dangerous this close to the house. I've attached some photos: 1. The first is a long range shot of the entire tree. 2. The second shows some hollow in the trunk. 3. The third shows what I'm guessing was damage from a lightning strike spiraling down at the bottom of the tree. 4. The fourth show a tree fungus about 30 feet up. The tree shows no obvious rocking or signs of instability, and the leaf canopy if full and healthy looking in season. Thanks for your expertise and please let me know if additional info / photos would be helpful.