I've quit carrying a camera as much as well. I found I was looking through the viewfinder when I should have been absorbing the experience. Sure, I've got tons of photos, but then I have trouble finding them in the boxes, albums or on my hard drive.
But I can always find the mental pictures wherever I am, and remeber the experience, the people, and the smells (Which occasionally are the same thing after a day on the rails)
I have a theory about memory and how it gets spotty as we grow older. It is like theproblem you run into when your disk space is growing slim. You start looking for things to delete so that you can keep the files you need.
I think the mind after a while rebels. It says to itself, "I'm not going to lose that memory of that glorious sunset gleaming at the end of that glorious day, so lets toss out that list of stuff to pick up atr the hardware store, and the appoinments for next week, and while we are at it, we'll toss out ol' what-his-name's name."
The business of living is to be alive.
Philip