My big brother wouldn't fall in most of those catagories. He was in the Army reserves instead of the regulars. He got married and had kids while I went into the Air Force. He worked his whole life away trying to just live a normal life. He injured his back and was retired from the railroad. He had a heart attack and he was told to try riding a bike.
He got me interested in riding about 15 years ago and I've never looked back. He lost interest pretty quickly since riding a bike involves a lot of pain and work.
In some ways my older brother is a big pain in the butt. But he's still my older brother and even when you'd like to punch him in the nose you also want to give him a hug.
Sometimes you need to be reminded of that.