Good news for aging into simple living - it is a natural progression to reduce the amount of shopping you do the older you get. You really aren't getting older - you are getting better. Better at living simply.
Generally household spending peaks between the ages of 45 and 50, and then falls in most every category, dropping about 43% by the age of 75. See? Just by following the natural way of things you will live 43% more simply by age 75 than you were at age 45.
Inquiring minds will want to know why this is. Do we get wiser starting at age 45? Are we more content with what we have? Why slow down the spending after a life of binge shopping?
Whatever the cause, it looks like most people will slowly slip into the simple life whether a conscious decision or not.
Tired of spending hoards of cash on things you don't need? Not to worry - aging will take care of that. Not to say one can't start spending less earlier...