He has bills to pay, just like you. And he's been waiting patiently for decades for you to hand over his share of your tax-deferred retirement dollars. He expects some folks to be stubborn about it, so he has an answer. It's called a required minimum distribution (RMD), and savers who have money stashed away in an IRA or qualified retirement account (a 401(k), 403(b), etc.) are expected to take money out and pay taxes annually once they turn 70½ (with some exceptions).
Many people don't realize this. When they get their quarterly 401(k) statements, they think the dollar amount at the bottom is all theirs to spend, however and whenever they wish. But they're wrong - or they've simply forgotten the bargain they struck with the IRS back when they signed up for the account.