How can something meant to be so beautiful be so dangerous?

Yes I'm talking about sex. I am literally scared about it since i have been researching the different STD's and STI's and with so many risk when you decide to take the step of sex you think people would talk about it more openly. I mean with less message about it being cool and not explaining how it can be a beautiful experience but also explaining the risk behind it. I mean looking at the statistics we have really high rates for HIV,chlamydia, herpes and other sexually transmitted diseases and the younger the age the higher the rates and allot of it is because lack of education. When will we get a handle on this situation.