Red Superfly
You creepy little stalker
We must also remember that Luke is not aware of The Force. He uses it unknowingly, and doesn't understand what the hell is going on.
The problem with Luke is, he is unwise. He understands right and wrong, but doesn't understand how emotions can affect your decisions. He is unwise and that is why he fails in ESB. By Return Of The Jedi, he has learnt how to be much more wise and is in tune with his emotions, and whinginess dissapears. Same thing happens to Anakin but on a different spectrum.
Luke was bright eyed and ambitious, like his father. He was energetic and open minded to the world of change. It's not whininess that is a Skywalker trait, it's passion. The Skywalkers are the most human humans in the entire series. "A very human being".
Luke and Anakin tap into our REAL selves. They are my favourite characters for that reason. Han Solo and Obi-Wan are the older, more experienced, if more cynical and "set in their ways" companions who seem cool at first, and don't whine, but they are also blind to the possibilities of their abilities due to the fact they are more cynical in their approach to life. That also makes them appealling because Han Solo is our inner skeptic, the part of us that goes "whats the point?" and "why should I?". Therefore, Luke and Anakin's whiniess is NECESSARY in order for everyone elses characters to work like this. Han and Obi-Wan wouldn't seem as "cool" if Luke and Anakin were as calm and as collected as those two were.
Luke > everyone.