No, you are definitely not alone. I know that you are correct on th issue Valerie. I wish I had known/thought of that when I was younger. Dentists/Hygenists should have given people more info concerning our teeth than they did.
Sorry that you may have to go through a root canal. I've had a few. On the other hand, it's better than losing the tooth.
For several years, I've kept a glass of water on my night stand, so if I need something sweet to raise my blood sugar on occasion during the night or food for my pain pills, I rinse my mouth/teeth with water. (I really do not feel like flossing or brushing my teeth during my sleeping times).
Also, if I have citric foods, especially lemons, oranges, clementines, I also rinse my mouth with water, if I'm unable to brush, since citric foods erode the enamal on our teeth. Diabetes of course, doesn't help either. Chewing sugar-free gum also helps create more saliva to help dilute sugars and acids from fruits, juices, pop, alcohlic drinks etc. Oh and I haven't drank pop since the 1980's, I guess, except once in a blue moon. Bad stuff, unless it's the only thing available for a low.
Wishing you the best, whether you need a root canal or not.