There are not really many thing I hate, but...
I hate calling food good or bad.
I hate calling a meal a cheat meal.
I hate guilt about overconsumption.
These concepts all obscure the only relevant question: is this choice consistent with my goals?
If my goal is to be exceptionally lean and top performing, a single cookie every once in awhile won't cause much of a problem, but if I'm eating a cookie after each meal it could start to cause me to overeat, or to replace other foods which would better fuel my performance.
If my goal is to be really, really happy, spinach probably wouldn't be the best choice relative to, say, my favorite homemade Christmas cookie (unless of course, you really love spinach).
If your goal is to manage an underlying health condition, eating foods that are great choices for some people may not be fine for me.
Rather than assessing foods in terms of good and bad, or healthy and unhealthy, think of foods in terms of what they contribute to your goals. Typically, whole, unprocessed foods as close as possible to their natural form, free of chemical additives, will be the best choices for promoting health goals. That said, even processed foods containing preservatives, natural and artificial sweeteners, and few if any vitamins or minerals, while pretty much always inconsistent with physical health goals, can have their occasional place in an otherwise "healthy" diet.