Spouses in divorce can sometimes be considered for the transitional law

The interest that you pay over your mortgage, can be deducted from your taxable income. Because of this you pay less income tax. This is the mortgage interest tax relief. 

A strict prenuptial agreement can prevent a lot of misery

Most couples that marry choose to marry in community of property. This means that you are both entitled to half of the property, but that you are also responsible for half of the communal debts.