Are There Really No "Cons" To Having Twins?

I've discovered a great resource for an expectant parent of twins, Twiniversity.  The site also has a very active Facebook page with lots of followers with great commentary.  Some of its good, some of its garbage.  One article that was just posted titled, The Pros and Cons of Twins.  Now... I haven't even read the article yet.... I probably won't.  What I have read are the comments that were posted to their Facebook page.

" I have seen this several times and think it should be called "pros and challenges of twins" I have yet to find any cons, just challenges. They are both true blessings!"

"There are no cons of having twins!! They are double the blessings, love, smiles, and happiness!!"

"No cons dislike button"

My Comment:
"Common... Of course there are cons, and there is nothing wrong with admitting it.  Everything in life involves balance... With all the ups there are downs, with all the goods there are bads.  You can't appreciate the great things in life if you don't also experience the bad things.  With children, its no different.  Sometimes we have really bad evenings with my son, but bath time rolls around, he calms down, I read him a story, tuck him in, and he falls asleep on my shoulder.  Him being a total asshole to me all night makes those moments that much better."

Let's get this out of the way first.  Yes... I said it.... my 5 year old was "being an asshole".  Lets face it.... if any single one of your friends treated you for five minutes like one of your kids treats you for a whole day, you'd never talk to that friend again and you'd call him things much worse than an "asshole."

And 'yes', I know... someday he is going to find this, someday he's going to read this, and someday I'm going to have to have a discussion with him about sarcasm and the differences between "being" an asshole and "is" an asshole, and then I'm going to have to buy him something expensive.   I just hope that doesn't happen until he's about 20, because that conversation is going to be a bitch if he finds this when he's 7 and that 'something' will be a lot more expensive.

But I digress....

So why are people so afraid to admit that having children.... let alone twins.... have "cons"?  Children are absolutely blessings, and they are absolutely the pinnacle of our existence, but is it really necessary to deny that the one thing that will give you the most happiness with also give you the most frustrations?