As someone firmly rooted in reality - I can't. When we participate in a community (be it religious or otherwise, be it of our own informed choice or not) we are bound by the rules of that community. When we knowingly break the rules of that community, we implicitly accept the potential consequences.
No matter how petty or offensive it seems that insulting a religion is grounds for imprisonment -- within the context of that community this is not something up for debate.
You say that the religion's rules "should not be" part of the rules that run a country. Maybe to your view and mine, this is true - but to the view of a sufficient number of people who actually make up that community, this is not true.
If enough people question it, then the rules of the community will change. But unfortunately, such change will require a critical mass of people breaking those rules - and being willing accept the consequences.
And unfortunately, it's that simple.