Is it that difficult? I'm 36 and have had 0 cavities, or anything I've had to have done to my teeth. I just brush, floss, and antiseptic mouthwash twice daily

Is it that difficult? I'm 36 and have had 0 cavities, or anything I've had to have done to my teeth. I just brush, floss, and antiseptic mouthwash twice daily and get biannual cleanings.