Family Reunification

I have heard so much talk about family reunifacation and legalising illegal immigrants but i am just curious, is there any benefit for LPRs who have filed for their spouses and have to wait for five years before they can live as man and wife?

I have heard so much talk about family reunifacation and legalising illegal immigrants but i am just curious, is there any benefit for LPRs who have filed for their spouses and have to wait for five years before they can live as man and wife?