L.B.
My son was raised on plain cheerios, regular corn flakes, rice chex. He did not know sugary cereals existed until a friend introduced him to the brightly colored sugary cereals. Yeah, he thought they were great. So we there began the great cereal wars. LOL
While I let him get sugary cereals sometimes, I am a lifelong Cheerios girl. You know what - he likes them also and never complains when that is what we have.
Eh, all things in moderation.