My biggest fear is losing my mind or experiencing significant changes in behavior. I recently was on a flight with one of my law partners of 25+ years. He is around 75 (still practicing law) and has been a great guy and a joy to be around. It was a 737 with the usual 3 seats on either side of the isle. He was a few rows behind me in a window seat. The plane was completely full. I was in a middle seat on the exit row across the isle from him. When we arrived at the gate most of the isle passengers got up to start gathering their things, as usual. I kept my seat until it was my turn to get up and quickly get my stuff together. My law partner, from his window seat, as soon as the seat belt sign went off asked the guy next to him in the middle seat to let him get out so he could get his bag from the overhead bin right above his row. The middle seat guy seemed like a decent guy and he did what I would have done by telling my law partner to chill out that everybody has to get their stuff from the overhead bin and we're not going anywhere fast. My law partner basically insisted that he needed to get his luggage out of the overhead bin and just crawled his way over the guy in the middle seat, and somehow forced his way into the already crowded isle where he stood while the rows in front of him slowly exited the plane. It was very difficult to watch. Ten years ago I can't image he would have done such a thing. I don't think he had a clue that he was being an asshole. Getting old sucks.