I don't see any reason to be upset that a civilized society spends a large portion of its output on living longer. It seems to make sense that as the material goods and experiences we want become less expensive that we should start spending more of our money on increasing the time and comfort in which we can enjoy them.
With respect to people living bad lifestyles, you have three unappetizing options.
- Let them die.
- Force them to stop living bad lifestyles.
- Pay the price yourself for the bad lifestyles that others lead.
There isn't really a fourth way. Unless you believe that most people's bad lifestyle choices can be fixed through education or non-forceful conditioning. Which, if you do, I have a bridge to sell you.