because I got seduced at the grocery store.
On the way, I realized what a mistake it was. I threw it to the garbage before entering my house. It is better to lose the buck I already paid for the paper, than lose a chunk of brain and some time.
Unhealthy food, should be thrown away as soon as you realize that it is negative to eat it. "Do not waste it" is irrational and unethical. The Talmud recognized it two millenia ago, when saying that the prohibition of wasting stuff, is irelevant when the body is the counter party. "The waste of the body is more important".
There has been times when it was crucial to keep food. Nowadays our trouble is the opposite and attitudes should be adjusted accordingly.