This. At 43 you're about half way done if you aren't unlucky. Spend time with the family. They're all that will matter to you later in life.

And avoid spoiling them [the kids]?

Most of the comments about not losing wealth amount to either poor investment or "spoiling" oneself - ie spending excessively on luxuries. But, I imagine it's harder to avoid spending excessively on other people; what does "my parents can just buy me a new one" do to a kids perception of value, how do they develop a sound work ethic, would retired parents in their youth have a negative hold over their ability to perceive themselves as workers (for themselves or others).

Gosh came here for this advice and can't believe how far down the page it is.

Indeed. Focus on what's important, like family.