A good review of his career in Congress at NPR: "'No Regrets': House Speaker Paul Ryan Will Not Seek Re-Election."
There's so many things I could say about Paul Ryan but foremost is this: like me, he believed that entitlements need to be reformed since we can't keep piling on to our mountain of national debt. My guess is that the recently-passed budget is where the conservative Ryan threw in the towel. There will never be reform, we'll just keep spinning up the spending and the debt until the merry-go-round breaks down.
I'd be heading home to spend time with my indebted kids, too.
Extra - From Instapundit, who needs this?
More - The Corner: "Ryan’s great insight, which he preached at every opportunity, was that the biggest fiscal threat to the country — and the biggest contributor to runaway debt — was entitlement spending, which grows on autopilot and is not constrained by the availability of money to pay for it, either in terms of government revenue or the private-sector economic growth that produces government revenue. Our current trajectory of entitlement spending is unsustainable, and no amount of fixes to anything else government does (including taxes) is going to solve that."