Wise money is the money you spend that makes you happy without compromising your ability to retire comfortably when you want. As someone who is nearing his 64th birthday and a couple of years from retirement, I can tell you that you become very focused on financial security.
I've spent a lot of money on fast cars, boats, and motorcycles....the rest I just pissed away. I have enough savings right now to work two more years then retire without changing my lifestyle. I've bought 62 four wheel vehicles, 16 two wheel, and 4 boats (with a total of 7 engines). Of all of those vehicles only two were bought used.