[MaskedRiderAsakura]

In the case of Micchy, Micchy has lived his entire life without control nor the means to gain control. He has to live a double life because while he wants to go out and dance with his friends, his brother has been forcing him to pursue higher education and imposes his elitism on him.

Micchy outright states that he likes being a Rider because it's given him a degree of control that he's never experienced before. As the plot goes on, that control has been gradually slipping away from him and he's made desperate attempts to gain it back. It becomes increasingly clear that he only cares about his friends in the most selfish way possible; for him they represent a status quo that must be protected at whatever cost possible, which means eliminating those who ruin his vision.

The point is not to agree with what he's done or even sympathize with it, but just because the plot doesn't reiterate how Micchy has got to this point every 3 episodes does not mean he doesn't have his reasons.

Really, writing everybody off who disagrees with you as a blind fanboy does not make your point correct.