Why do gun nuts and the nra ignore the “well regulated” part of the 2A ?

It will happen when necessary. Keep in mind militias are state groups. Not federal. Also keep in mind the SCOTUS has already turned back people who argued this point.

the same reason you ignore "the right of the people to keep and bear Arms” part

Sorry nut job, because President Trump just put gun loving conservatives on the Supreme Court who love that old 2nd Amendment.  Do not ever give up your right to own a gun to protect

your family and your property.  You nut jobs want to take away the guns and take away the police and you can do whatever evil thing that you want to do.  IT WILL NOT HAPPEN.

The NRA  does NOT ignore that part.

Those ignoring the Second Amendment are those who misuse their Rights and act irresponsibly. Those ignoring the Second Amendment are the Elected Liberal City Mayors and Liberal Judges who refuse to enforce the laws already on the books.

Do even know what the words well regulated means? The words well regulated in the second amendment speak towards the obligation of the government to keep the militia in working order. Meaning that assault weapon bans, magazine restrictions, and other bans and restrictions targeting weapons useful in wartime are unconstitutional. 

Pay attention here, folks.   This is what you'll see from a leftist Supreme Court.   There will be no need to reverse the Second Amendment with a new one - the left just needs the right interpretation in the courts.

They don't ignore it. Which is why they promote responsible, legal gun ownership.