Alright parents, why is it that we are against teen sex again?

the teens who cry over "he didnt call me back!" and things like that are obviously not mature enough to be having sex. i lost my virginity when i was a young teen and even now i dont regret it at all. ive always been very mature for my age, and when i decided to do it with my boyfriend, we had been together for a long time, truly cared and loved eachother, and we used protection. it was a great experience for both of us because we were both educated and knew what we were doing and the possible consequences of what we were doing. we discussed it beforehand and came to a conclusion after months of debating that we were truly ready. neither of us wanted it to feel like a mistake later down the road. if the teens who have reckless meaningless sex didnt ruin it for the few mature ones, it wouldnt be that big of a concern.