It was the Labour party who did most to privatise the NHS.
Things like the PFI initiative (as used by Labour) is now costing the NHS millions a year.
http://www.newstatesman.com/politics/2015/01/labour-cant-escape-its-blairite-past-nhs-so-it-should-stop-crying-privatisation
And phrases like "RIP NHS" are just the sort of stupid meaningless phrases that Labour came out with over and over again during the election build up, and of course look what happened to them.
Also phrases like "coffers of his rich shareholder cronies" are also right out of the Labour book of standard negative phrases to make about the Tories.
In his resignation speech Miliband talked about Labour being the party of the "working man" but that phrase is like something out of the 1920s. Most people don't think of themselves as the "working man" any more, which is why you lost.
The only reason Blair et all got in in 1997 was by ditching that old fashioned "Labour" image and making themselves look and sound more like "Tories". Since then Labour have gone back to this old "cloth cap" image, hence why they failed.
You had your chance, you lost. The public has spoken. Stop bleating about it.