There are no other branches above your branch that small bears can crawl out onto and drop down to your branch and break the rope. The tree is in the middle of your camp and less than 20 feet from where you are going to sleep.
Some people prefer to sleep right below their food.
I love Ponderosa pine trees with high branches that taper to 1-inch in diameter about 25 feet from the tree trunk. However, I usually get a tree that is significantly less desirable than the attributes listed above, and I am forced to compromise.