How Can Anyone--Much Less Anyone over 60--Support the Republican Party?

I'm not eligible for Medicare yet. And I'm not sure just how my former employer would respond to the Republicans' proposed changes to Medicare (I guess I ought to be finding out). But it astounds me that anyone, much less anyone at or getting close to 65 would support Republican economic policies. In a way, it's even worse for younger people because by the time they get to Medicare, it will be vastly more expensive for them than it is now--if the Republicans get their way. The arithmetic is simple, but Republicans choose to ignore it--why? Are they stupid or do they just not care?