Oh, the Drama

Why does it seem as though women just can't get along? I know, I know, it seems so stereotypical. Unfortunately, my experiences in organizations made up primarily of women, make me wonder what's going on.
A friend of mine recently had a Facebook status post, an innocent question, which quickly blew up into a full scale war of words between some of her "friends." Later, my friend posted that her previous post had inspired her to block some of the offenders because she realized some of these "friends" were the same people attacking her on other message boards. Long story short, these message boards are support groups for moms of multiples.
It didn't surprise me that she has been attacked by other moms. I once was part of a moms forum for a national magazine. I posted an answer in response to a "how to" question and was met by other moms saying "I would NEVER do that." I let it roll off my back, rather than start an argument. I don't know these women personally, so what's the point in responding to criticism? Even within my local moms of multiples group I've seen clashes of personalities that resulted in hurt feelings and even some withdrawals of memberships. One mom said it gets worse as our kids get older and are involved in more activities.
It's not just "moms groups" that are full of drama. I work primarily with women and I'm not sure I've gone a day without listening to some type of drama. I try to stay away from it, do my job and go home. You could argue that you'll have this drama in any type of working environment, male or female, but consider this: Hubby works primarily with men and rarely comes home with tales of drama. Are men more likely to let things slide? 
I like the fact that everyone, male or female, has their own opinion. It's part of what makes this country so great. You don't have to agree with me... I don't have to agree with you... but do we really need to attack one another for not believing the same things?