My wife and I married at the age of 29 and 34. I had no debt at the time...she had 2k on a credit card. The day after our wedding I paid off that card and we haven't had one again. We have taken loans on vehicles, but paid them all in no more than 3 years. We have 5k left on our one year old trailer and will have that paid this year.
As one poster said, my kids are right at that sweet spot. Even though it goes against our financial philosophy, if we waited to pay cash, we would have missed a third of our families sweet spot.
I've always been confused when people talk about how expensive things are. I believe a lot of people just make it that way. For instance, a golf day with my buddy. He stops for Starbucks for his coffee while mine is from home. He picks up a pack of balls at the course for twice what I did elsewhere. He grabs a sandwich at the clubhouse, I brought one from home. He needs a drink on the drive home, I have a thermos in the truck with cold water.
We had a similar experience that day, be he spent at least $30 more than I did.
This pattern is present in almost every family that we are friends with. For this reason, I truly believe that my wife and I WILL be able to afford retirement, even though we don't have the millions that financial advisors say we will need. I've seen it all my life so far, and don't expect it to change.
As for changing the habit of pinching...I don't believe I will be able to. It's become me.