I hate to say this, but it sounds like you're a little bitter that teens are popping out kids and you are having to wait to adopt. I completely understand that and you're right to feel that way. But you're using an awful big brush to paint every circumstance.
>>Is that would YOU would tell them? <<
That’s what society tells them. Their schools, television and their peers.
I find it strange that you see bitterness in wanting children to have a great life. I have raised a niece and a nephew then my own children. We do have a loving home and are willing to adopt/foster children. We have looked into it and if Our Lord wants us to have them, we will.
But what we are doing now is not curbing teen pregnancies. Maybe we should try something different. It affects all of us.