Um ... I think your beliefs on a certain DIS-forbidden topic may be coloring your perceptions on this one. The girl has total control over the outcome, and can choose whether or not to deal with all those things, but the boy cannot; he has to live with and pay for whatever decision she chooses to make. He cannot unilaterally choose to undo the foolish mistake via termination or adoption, but she can.
I'm not calling that unfair, but it does mean that boys actually need to be MORE careful about who they choose to become intimate with. These days, STD precautions notwithstanding, any kind of sex other than an anonymous one-night stand might come with an 18-year-long financial penalty that they can do nothing to get out from under. They need to pay attention and take precautions more complex than just being sure to have a condom on hand.
As to the surety of becoming active; it depends on the kid. I wouldn't throw a fit if either of my kids became sexually active before the end of high school, as long as they were careful about ALL aspects of that choice. However, I fully believe that it is quite likely that my DS will get all the way through HS before he becomes active, because of who he is and how bad his social skills are. DH likes to point out that for your average young teen boy, wanting sex is a whole 'nuther story than actually managing to get it. You have to find a willing partner, for starters. For a lot of boys, it works a lot better in theory than it does in reality, and deciding to take that leap for the first time can be a bit overwhelming -- even for boys.
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