Thanks for posting such great information. My character's mom died during child birth and he never knew his father. Is it a strong enough story goal for him to want to find his father because he (my protagonist) wants to know where or how he belongs in the world? And that he is afraid of dying without knowing? Or do I need a stronger consequence? I'm a bit flummoxed. I really didn't want to go with something as dire (or seemingly cliche) as needing medical assistance. Answer:
Yes, I think you could use that as a goal. The challenge is how to illustrate the consequence of never finding out - not knowing where he comes from.
I can't tell you what to write (it's your job), but what you may need is a way to illustrate the consequence in a tangible, physical way. Perhaps you can present an event that shows how he does not fit in with his peers or adopted family, and therefore with his environment. The implied consequence may be that this situation will continue or worsen over time. Hence, he tries to find his real father to see where in the world he does fit.
You could also give him an example of another character in a similar situation who suffers because of it, but I think the primary thing is to establish his feeling of being at odds with the world that stems from dysfunctional relationships.