Why is that a bad thing? I don't know for the US, but in other countries you have mandatory tests (hepatitis, gonorrhea, many others) to do every 3 months in order to get the treatment. This alone makes you more protected than people who only use condoms as protection and think they don't need tests.
They only check Liver/HIV every 3 months (I have to ask for liver every 3, my doctor was going to do it only every 6). I make my doctor also do a full screening but by default he doesn't.
Americans please correct me, but here it's more symptomatic with sexual health: You have a rash/etc, so you go see the doctor. There's no early-detection system where you are reminded to get into a clinic every 2-3 months and get a full test (blood test, swabs, etc) for all the usual suspects: HIV, herpes, chlamydia, etc.