This is a great idea because of the fact that it covers single individuals that have due to life choices and circumstances have not or isn't going to get married.  Also due to the cost of living co-habitation is a very good option.   As a single female that understands that due to societial circumstances it may not be finanically smart for me to marry or live alone (i.e child support, bills, etc) this would allow me to care for the health of my household.  This gives individuals that have established a life and home  together a chance to be able to provide and care for the health of each other.  I understand supporting marriage but until some of get there we need support too.