If I've understood the argument correctly, the main reason for getting married is so that you have better protection if you split up - is that right?
Not just split up - but death: Avoiding IHT, access to ISA and pension, ensuring wills cannot be overturned, next of kin. As well as accessing married couple’s tax allowance
I don’t want either of us to have to sell the house to pay IHT if one of us dies
There are of course significant legal rights afforded to married couples in the event of separation as well, such as home rights and maintenance.
Whether you see these as affording protection, or placing you in a position of vulnerability, depends on your personal circumstances
We wanted the rights of married couples, so we got married
We can’t have children, as it turns out, but we got married after 12 years together because we wanted to start a family. I wouldn’t personally have children without the legal protection afforded to both partners by marriage. But personal choice.
I think it's tragic to see the number of threads on here where women are left high and dry because they didn't know that they didn't have the rights they thought they did. That's not a reason to force common law marriage by default on all cohabiting couples however.