Isn't prevention better than cure?

I have been with Discovery Health for many years - at least 20, if not more. They always used to cover one screening a year, and it has now been changed to 1 every 3 years. I find this extremely shocking, infuriating, and short-sighted! Surely prevention is better than cure! With the rising stats of cancer (I am no medical professional so am literally speaking of this in my own personal circles) we are all at risk and cervical cancer is extremely sneaky and also a very simple procedure to have once a year. For all that we pay towards medical aid (which is NOT cheap on ANY level, but a must-have), to be protected and enhance our health, I feel it is the least they could do, is to cover something like this EVERY SINGLE YEAR! Surely in the long run it is cheaper for them too. In this regard, you definitely are NOT 'striving to make the world healthier'!