I had a 99 year old, 90 foot tall hemlock taken down by the tree service last Tuesday. (I've got the "bush" all chipped up)
It was the closest tree (15 feet) to my shop building (which I might value greater than the house) It was within striking distance of the house. And, a spring time wind had started the roots loose, and had the top supported by the smaller hemlock next to it.
I thought about dropping it myself, cables and tractors etc. but then went and talked to a friend who has a tree service with several cranes.
It was fun to observe how the pros do it. My wife thinks I'm smart. ;-)