I'm sorry I have a regard towards peoples personal effects of a graphic avatar like that.
Whether it's art or not, it is obviously showing that some of us are getting offended by it. It isn't hard to understand why someone would get offended by pictures of a bloody female, so please have respect for the 'minority' of us, because I'm sure that avatar is doing more wrong then right and that we are trying to clearly bring that message across by means of kindly asking to change it.
Is it really that hard to change? Is it too good of an avatar to change? If someone found my avatar offending because of some reason, I would have no problem changing it to something different. It's not about why we are offended, but the fact that we are offended.