It is a perfectly valid question, but entirely irrelevant to the issues you were talking about.
The problem is that solving the West Lothian question has too many ramifications for the political establishment. It would be possible to have a Secretary of State for Health who cannot vote for his/her own bill. In fairness the Secretary of States for Scotland and Wales would have to come from these nations. You can't really have a parliament with two classes of MPs.
But we do need a resolution to the West Lothian question, just like we need elections to the Upper House.