For the most part, my teeth are great. Never need braces, no cavities, etc. No real issues. However, my dental hygiene suffered, as I kept forgetting to floss, and brushed only once a day.
PSA: DON'T DO THAT.
Long story short, I got some sort of gingivitis (for those of you who don't know, it's a gum infection/disease). And let's just say it was not a fun experience. It felt like I was brushing with a metal wire brush, flossing with razor blades, and using mouthwash was basically liquid nails - on fire.
Since then, I have not missed brushing once, and now floss every other day. Let this be a word of warning to you all. Don't just brush your teeth. Mind the gums as well. IT'S WORTH IT.