Well the fun part is we can now discuss cutting senior's entitlement programs, just not for anyone 55+. They get grandfathered in.
Eh, it sucks, but they'll most likely die before we do, so it will all balance out.
In my opinion, if we want to get serious about the budget, we should do it in this order:
1) Defense
2) Discretionary
3) Social Security
4) Medicare
I put Medicare at four because Medicare is simply the end result of a massively screwed up system. There's so much that needs to be fixed there before we can even begin to address it.
If you get serious about cutting the defense budget and start tightening the belt on discretionary spending, while increasing the tax rate for the richest 2%, we'd start to dig out of the hole a lot more quickly. Then the next great battle would be figuring out how to make Social Security solvent in the long run. After that, we can address Medicare.