I had the same realization some time back. I began working A LOT and had no time to eat so I resulted to McDonald's. I ate it every night after work (usually past 1am) and it became addicting. I continued to eat the stuff even though I wasn't hungry.
After a while, I forced myself to stop....but I was addicted. So one night I bought $15 worth of the dollar menu, fries, and desserts. I forced myself to eat it all.....
I got sick
Every since that night, I have not craved for McDonald's. The food is beyond processed, greasy, slimy, etc. I figured since Burger King caused me to get sick one too many times, I would make sure McDonald's would do the same.