Based on your interpretation, even sex of any sort is a personal choice. two people want to have sex, what is it to you then?! no compulsion!
You seems dont get what I mean. Of course not praying, not wearing hijab is sins, but government cannot enforce that thing. That is private thing, similar like what is inside our heart should be keep private.
Look, I have read whole Quran meaning not only once, also I have read the biography of prophet Muhammad, this is why I have confident to do debate on this one.
And please differentiate between minor and major sins and God has great forgiveness on minor sins. Of course it doesnt tell that not wearing hijab is OK as long as your dress is pretty much modest, but that is the way to make us closer to God, improve our Taqwa to the God.
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The important of Niat (Intention)
I would say many Ulama forget the important of niat ( intention of the heart ), we can do some Ibadah but in the end it could be seen as not ibadah as there is what Islam define as Riya inside the intention (wanting to get approval and reward from human for doing Ibadah to Allah).....
I was even shock when I heard one Ulama in my neighborhood said that he has given his life for da'wah to God only. This is something pretty dangerous if we understand about Tasawuf and the important of securing and clearing our niat (intention). That was stupid I would say and I am talking about Ulama who understand many verses and Hadiths
So if you enforce Hijab to women, that enforcement can spoil their intention
The punishment and enforcement in Islamic law only happen to Criminal conduct like stealing, murder, and also non halal sex. That is written in Quran, then show us where the punishment not wearing hijab or not praying 5 times daily in Quran ? That is only under God judgement (court), not human or government judgement (court) to decide