dental fear

I have a dentist appointment tomorrow, which means I have a tight knot in my stomach. I hate dentists. Every visit results in three things: 1) fingers in my mouth, 2) shame, and 3) drilling. I have always had cavities--a combination of weak enamel and a chocolate addiction. Why do I do this to myself? I'd almost rather not go until my teeth fall out in 20 years. Would that really be so bad? This way, I can save money and go to the dentist only once.