why did they die?

Many people wonder during the readings of the Torah-is G-d that judgemental?After all , the sons of Aharon apparently had only the best of intentions. Are we to conclude that for every inequity ,we would be punished so severely ?
The classical commentaries say that they enterred the Holy of Holies in a drunken stupor. Others say that they carried out a Torah instruction without asking Moshe his opinion.Others say that they
refused to marry ion order to maintain their level of spirituality.
While these accusations have various degrees of impropriety , none seem to be so severe that they couldn't be repremanded, as Moshe did to Aharon for participating even cosmetically in the golden calf fiasco?!
Must we assume that every time we mess around with G-d's laws that we will have our lives taken?
The average person finds this troubling.In the writings of Rabbi Chaim Vital , we find that the 2 sons of Aharon shared a common soul -that of our original father , Adam. What was Adam's
downfall? He ahd all the opportunities to eat from all the wonderous trees that G-d had placed in the Garden. Which fruit did he eat from first? The tree he was forbidden to eat from!
In other words, it wasn't just that he didn't listen. Rather the first thing he enjoys in G-d's Garden is the very fruit that G-d told him "you shouldn't have as it would be harnful for you"!
The very first activity that the brothers Nadav and Avihu do on their own in the temple, is one that is forbidden on many accounts!
As they were to have corrected Adam's nature and brought life to the world ,they proved instead that Adam had learned nothing over the last 2449 years !
Most of us are told by our elders that there are things you shouldn't do,especially since that adult tried it and knows how inapropriate that habit or behavior is. What do the young people do? They need to learn from their own mistakes. However, it takes real chutzpeh to start with the very thing you were warned not to do. If this is the case, then this is a person who not only cannot take instruction . Rather , thjis person is fascinated with the forbidden and always finds a way to experiment with this first.
This indicates a rebelliousness that is far more than imperfect. It indicates an infatuation with
rebelliousness itself, not just the temptation.
It is one thing not to obey because i was desirous of a forbidden pleasure. It is quite another if i enjoy disobedience. This is the issue. arepremand can't help this problem...