How would you make all religious marriages legal ones?
No one official knows my religious/cultural wedding existed. Plenty of people get "married" with celebrants, family friends in gardens etc. Mine was in a sports hall with a local community leader. In the same way its impossible to find out who has renewed vows, commitment ceremonies because what is a wedding without the legal part? It's a promise and celebration with no distinct form that's impossible to police.
I did happen to get legally married because it was important to me and because my wife is English. As a same sex couple our marriage isn't legally recognised everywhere but id consider her my wife in all countries and we would proceed with family making regardless. I know several people in my community who are culturally married but not legally, most of them dont even know why aren't legally married in this country
Its why its important to be engaged with the communities because it needs to be frowned upon internally. It needs to be faith leaders and community leaders who are fully engaged. Its how child marriage, keep in girls in education etc all progressed.
Again we would also need to know who's cousins with who, which is actually a hard job! Especially with communities that sprawl countries etc and may not have consistent paperwork.
If people go to get married abroad would we be doing checks to annul it?
It would have to be dna checks because its the only accuracy
And what would happen next? Say a couple feel married and meet their cultures criteria of married, even if you refuse to legally recognise the marriage they are likely to have kids? Would you forcefully seperate them?
Abort any children outside of a "legal" marriage?
People aren't going to legally engage with a process when they will be punished for it.