I'm Atheist, but I do share views with some religions. Like muslims frowning upon alcohol, or the idea of waiting to have sex until you are in a relationship where you are prepared to deal with the consequences of children (similar to the catholic church's stance on sex within marriage I guess). So no, you are not alone, and my opinion isn't soured by an emotionally distresing prior experience (or any prior experience for that matter), I just happen to be able to think without the use of my penis.
In truth, I think that not only do people not comprehend or accept the responsibility that comes with sex (at my age anyway), or treat it as something emotional (rather than just physical), but they also seem to think it is necessary for a relationship to have fun. I mean, what is wrong with enjoying the simple things, like fairy floss and ballons. Its like, they get up one morning, instantly despise anything which can be in any way child-ish, and are controlled by urges to separate themselves from the pre-adolescent community, despite the fact that they clearly are not ready for the responsibility that comes with being an adult.
I may or may not have strong views about this topic <.<
EDIT: Oh, and also, society was once in a state where sex at 16 was considered normal, as having children at that age was accepted and expected, and yet, society has clearly changed, making us independant and mature at a later age (after we finish apprenticeshps and university courses and stuff) but the age of sexual activity has not altered enough to relfect the society that it affects.