Maybe it will make more sense if I explain my reasoning better.
I grew up in a non religious household. My father reads the Bible but does not attend church. My mother doesn't know what to believe but has a problem with most Christian denominations and the hate they preach. They allowed me to choose my own religion. I started attending a Southern Baptist Church when I was 8 because a friend went there. It was through my youth group there and my two best friends who attend other churches that I heard about True Love Waits.
I made the decision in middle school to do it. It is my belief that God's intent was for people to wait for marriage. God asks for us to remain pure. To me this is staying away from any temptation that leads you astray from His plan. Be it sex or other sin. That is how I interpret it and I do not expect others to hold my same beliefs.
I later became Catholic after much research into the other denominations and visiting various churches. My belief still holds that this is what God has intended for my life. But it is not just a a religious pledge. Other factors went into my decision:
-I do not have to worry about STD's. When I say no sex, I mean no sex. I don't split hairs about types of sex. I have held hands with friends as they waited for the results of STD tests, this is something that I do not have to worry about. Most STD's are incurable and will lead to serious repercussions later in life. Yes, you can use a condom or other barrier protection, but they can and do fail. Albeit, rarely, but it is always a possibility.
-I have known several people who have stated they wish they waited. It seems that sex often gets used to control people or try salvage a broken relationship. It seems from my own observations that sex can complicate a relationship when it is engaged in too early. This is why I will wait.
-I grew up in a family in which physical displays of affection were not prevalent. I very rarely see my parents kiss, hug, or even hold hands. Due to work schedules and the fact my mother has sleep apnea, they don't even sleep in the same room. I grew up around two happily married people who did were not reliant on physical affection to show their love for each other, so it has simply never been a priority for me.
-I do not have to worry about an unintended pregnancy. Birth control can fail. There are also some potentially nasty side effects with birth control such as increased risk of blood clots. Most people don't get them, but the potential has always frightened me. I will not have to worry about becoming pregnant at an inopportune time and the difficult decisions inolved.
-There are many medical conditions that can affect sexual desire. What happens if one or both partners is unable to have sex for a period of time? No, most relationships are not based solely on sex, but when it is the overwhelming basis of your relationship, it can and does cause problems. I would prefer to know that a man loved me for more than just my body.
-Several you claim that wearing a ring "advertises" it and that nobody else does. How about shirts with sexual innuendo? Wearing promiscuous style clothing that puts one's body on display or dressing like a pimp as some are wont to do? What about the sacred wedding ring? In most cases the wedding is not consecrated until the couple has sex. That wedding ring advertises that you are most likely having sex with that person, and that you are in a monogamous relationship if you are inaccordance with societal norms. As I stated, most people automatically assume it is a promise ring if they notice it at all. It does not say "True Love Waits" on it or look like a typical purity ring. The ring is for me and me alone, and the only way you will know what it is is if I tell you. I don't go up to random strangers and announce it. If you met me in real life, you would most likely not know what it was.
For all I have said you can have a counterargument for, and that is fine. But this is what worked for me and the reason I chose this path.