The United States of Shame

They are "bad" because they do not contribute as much to society as a younger person would. Low productivity translates to slower economic growth.

At worst, retired older people just sit around buying things, sometimes buying more than an average working age American, but depending on their retirment budget it could be a bit less.
And I think the effect would be, at worst, on the Government Budget in medicare and SS, but that's not the people's fault for the government offering such benefits. I also think these people deserve the benefits since they paid into these services as they worked earlier in their lives.