The Bechorah

On our worksheet today we had the question: Why did Yaakov want the Bechorah so badly? This got me thinking to why did he want it so badly? I know that Esav stole it when they were coming out of the womb and that could be the reason, but I think it has to be something more. Yaakov tricked his brother, which makes me think even more than it had to be something bigger. I guess it could be that he was just so jealous and upset about his brother stealing his spot, but I just really think it is something more or bigger than that. This is probably bothering me so much because Yaakov is the good child, the child who follows in the path of Hashem. We would expect to see something like this done by Esav, but not Yaakov. Maybe it has something to do with how Yitzchak loved Esav more. Maybe Yaakov felt left out or something like that. Maybe he wanted to be loved by his father just as much as Esav was. If this is the case then it's really an issue of Yitzchak favoring one of his children over the other. Which then makes me question does Rivkah actually love Yaakov more or does she just feel bad that her husband chose one child over the other? This whole thing just really bothers me! HELP!!!!