Earlier quoted context omitted.
Well, it works well for me. 16 years married, and I have never cheated. In fact most of my friends and colleagues have been married a long time, including my friend Irving. He and his wife have been married for 70 years (they're both 92). The percentages are meaningless when we're talking personal choice. It is a valid way of avoiding STD's, and a choice I made back in 1990 when I was 20.
Not to be a downer, but you've only effectively lived 1/3rd of your life, not to mention is that you aren't the only partner in your relationship. Monogamy may work, safe sex pretty much always work :) Most people not only not getting married at 20 if at all these days, they are also having sex at an earlier age. GL telling 16 year olds to wait, I wasn't going to get married in high school, and I had no intention of…
I remember the term safe sex back in the late 80's. Then the term was changed to safer sex. So let's say you're going to have sex with a person and just before you start to get it on they say "oh, by the way, I have AIDS". Are you still going to have sex with them?