The world looks different....
When you get older you come to a point where things look different......and are. Planning for 20-30 years down the road is over and things once highly valued don't look so shiny and enticing. Maybe it doesn't hit everyone, but it has hit me and I'm not sure that I am adjusting to it as well as I would prefer.
I am trying to plan less far down the road, considering the road is not eternal, and wanting to suck up more of the value in short term availability. If you are not financially concerned to any real degree of worry, you realize that money truly isn't "everything". Once determined, you can relax and enjoy spending it in ways you might not have considered earlier in life. If you are fortunate enough to have most everything you ever desired, you can focus a little more on helping those that don't.
All in all, the changes with old age are both subtle and sudden....it is hard to reconcile the differences at times. Some days I am young inside but old outside....other days just old all over! It is uncharted territory. Keeping a positive outlook is key...but not always that easy.
They say you gain wisdom with age? Maybe so from the years of experience, but there is still plenty of room for more training!
If I can point to one thing that I would recommend to the younger generation, it would be to enjoy your youth to its fullest potential. Take some risks, see things far and wide, learn to relate to all types of people of all dispositions, cultures, races and religions. Don't put yourself in a box by your own prejudices or opinions without listening to others. Everything you learn is from someone else, and it is surprising how much you can learn if you just watch and listen.
Regards!