 Tom Hagen says this is the number one most important retirement decision you're going to make in your lifetime. And the reason why is he's like, everyone thinks about their 401k or their IRA, whatever they have in their retirement savings is their biggest asset for retirement. But social security for many people could be the largest asset. He says that, you know, if you're single and you add up all the lifetime income streams that are going to come from social security, that could be over $500,000 in benefit that you're going to receive from social security.