Because the best versions of the punisher, the ones people love, have always been firmly rooted in realism (the Vietnam years,the vigilantism, ring any bells) . Most of the marvel universe is not. No one complains about wolverine having a healing factor because its part of his established character. The reality of The Punisher is an important part of HIS character.  
 
  As for your whole point (if it was one)  in bringing up Lolita, i believe those characters were Nabokev's creations, Rick Remender did not create the punisher. And all he has written of the character is a crappy run on war journal and a handful of average issues. And no one has the right to mess with the basic  idea of The Punisher. It would be the same if someone took away supermans powers and made him into a reporter full time.   If all Remenders creativity can amount to is zombifieing Frank Castle then he should never been given the job. 

 
If you like Frankencastle, thats fine, you pay your money, you have your right.  That said, the reason people are complaining about the  lack of realism in Frankencastle is because it violates all the elements that made The Punisher  one of the greastest characters in comics history, one of them being THE REALISM.

 if the Punisher was anywhere near realistic, then he would've been cut up by Wolverine years ago. "

I started a Blog a couple weeks ago about Punisher and realism, and I found that I did use the wrong words to describe what happened to the Punisher. 

What made the Punisher famous and unique was his naturalism 
 
Punisher is a symbol of our true feelings about crime, and some comic fans may not see this because they rarely may find themselves seeing the darkside of our world that has people wishing that somebody would just end all the drug dealers, murderers, rapists, and everybody who prey on the innocent. 
 
Like Captain America was a symbol of America and its soldiers in World War II when he was introduced in Marvel Comics in the 1940's, we wanted a hero to kick some nazi ass and thats when Marvel created Captain America.  
 
Punisher is a misunderstood character in a way because of his concept,  he was created by that guilty feeling people get about vigilantism and Marvel writers change his concept because Crime stories wasn't interesting and lacked comic sales. So Marvel writers felt that they had to get the Punisher involved with unrealistic events, characters, and situations to increase comic sales, which really ruined the Punisher when they changed his concept twice. 
  
After seeing the cruel and darkside of this world, I realize what is the realism about the Punisher, which is the CRIME he fights, Drug Cartels are real, Sex trade is real, Murder is real, Rapist are real, and its nice and awesome to see a MAN, who's flesh and blood, armed to the teeth, storm in and play judge, jury and executioner with his M-16. Its rewarding, very rewarding to read.   
I also find it funny that when I say realism and Punisher, people tell me about a Daredevil villian known as Bushwacker instead of Drug dealers, gang members, crime lords, murderers, etc.  

You would probably have to dig in the past to realize why the Punisher was awesome and how he had both naturalism and realism, and I mean read his first own series and not the series that was in the nineties.

 
as for Franken-F**k 

I hate Franken-F**k, with a passion, if I have a Franken-F**k comic, I'll probably debate if its worth enough to wipe my ass with. That was a sick and cruel joke.