My dad made the point that healthy eating is more expensive, so therefor it's not important. Let's argue that.
You can eat cheap crap for 30 years, and need an emergency bypass heart surgery because you have liquid butter in your veins, winding up with thousands in medical bills, or even death.
You can spend a little bit more now, and know that you're helping your body for now, and then. And not gain 40 pounds while doing it.