Then why do the righties consistently make fun of proper pronunciation?
They don't, Cy.
They simply call the left when it points out that "nucular" is not a word in the English language.
Words like "idear" and "umbrellar" are Brooklyn and Boston, "ova theya" for over there is New England, words like "fahr" for fire are southern pronunciations, "sinate" for senate is trom Tixas (Texas) and Oklahoma, etc. Those are regionalisms or accents, and are annoying or charming depending on the ear of the listener.
But "nucular" simply is not a word. I don't care how many times Bush and Eisenhower and Palin used it, it isn't a word. Failure to properly learn the language of the country they profess to love so much leaves one bemused.
(This has been Pet Peeve #1208)