That is an interesting perspective and does show subtle character growth in terms of Cloud's overall arc. I am sure he is still bummed about what happened to his hometown, mother, etc. However, Cloud did realize what was truly more important, and he also had the clever idea to ask the whole party to try to find a reason of their own on why they want to defeat Sephiroth besides saving the world. Man, that whole section of the game was so cool and really added real humanity to all the characters.