If humans are the most evolved beings we know of why can’t we fly and breathe underwater?

Question: If humans are the most evolved beings we know of why can't we fly and breathe underwater?
- Keywords:
  breathe,
  evolution,
  evolve,
  fly,
  human
Asked by elliscwh to Helen, Jenni, Mark, Martin, Stu on 23 Jun 2011.
- Helen O'Connor answered on 23 Jun 2011:
  
  Because we have evolved to be intelligent enough not to need to – we created planes to fly, and equipment that enables us to go underwater, but we dont need to do either of those things to actually survive. We can keep ourselves fed and warm without needing to adapt wings or fins.
  
  In the future, who knows how we will evolve though.

Question: If humans are the most evolved beings we know of why can't we fly and breathe underwater?