I've found that with myself, as I get older I get more selective with what new stuff I learned. I've seen so many fads come and go, and don't really have a whole lot of time ahead of me, so I need to make sure that what I learn really counts.
As I'm getting older all my organs are working less, and my brain is slower as well (though I'm able to think just as deeply as before).
At the same time I'm much more concious about spending my thinking energy, and because of my experience I'm making much more money than when I was younger _despite_ my slower thinking.
Discrimination involves hate, and I definately not hate old people, just accept the facts of life (and I'm also hoping for a cure for aging).