Agree with you on everything, except frozen foods. I am in my mid 30s. I like to cook and try to eat healthy. I have read at many places on the internet that frozen vegetables in some occasions are healthier than the ones I can at the supermarket- because they are flash frozen, retaining most nutritional value vegetables stay out in shipping and shelves far too long losing nutritional value. Also that they tend to be picked before their time to accommodate for shipping and shelving while frozen vegetables are picked ripe for freezing.
Frozen processed foods like pizzas, ready to eat foods loaded with preservatives are bad as one can imagine.
It was counterintuitive to me that frozen veggies can be better than fresh looking ones from supermarket. Same goes with tomatoes from supermarket shelves versus tomatoes in a tin - apparently the tin ones have better nutrients because they were more ripe when they went into the tin, while supermarket tomatoes were picked well before they were ripe.