"But do they deserve to suffer from the physical strain that is pregnancy in the short term and the financial burden in the long term"
If you were to tell a child (as one does ) that playing with a hammer might end him up with a missing fingernail (pain ), do you think that child would be more or less likely to do it again in the future, were that accident to happen to him?
Human beings learn by experiencing the world around them, do they not?
What do you think about the possibiliy that someone else paying for their unfortunate choices would in fact be coddling them, therefore inhibiting life's learning curve?
That their actions have reactions (sometimes good,sometimes bad) . It's the flow of operant conditioning.
What is your opinion on Newton's 3rd Law, when applied to human nature?