We spend far too much time throughout our lives worrying about getting things done as fast as possible. At your job, at home, on vacation with your kids. As we get older we SHOULD worry less about this.
As for me, well, I spent a lot of time in "high stress" jobs where the contracts needed to come in on a specified date. Well, no more.
I had a surgery in 2010 that woke my happy butt up. I spent about six long months not being able to do much of anything. Now, whenever I do virtually anything, I am not longer in a hurry.
I am certainly not going to take away from my riding experience by throwing any sort of time, charts, or anything else into it. I ride for the pure enjoyment. The smiles that I receive, and the looks that I get from others.
Being over 50 one shouldn't be striving for anything BUT the enjoyment. If keeping charts and timetables is what makes YOU happy then go ahead and do just that. But, in the end, that's a complete waste of time.