Earlier quoted context omitted.
I am really curious. You say you have used the net for 20 years now, so how can you be surprised about this? Have you not exposed yourself to other anonymous forums? They're all filled with vitriol and disrespect.
As another surprised guy I'm aware people post bad things on the internet but I wasn't aware of the degree of difference between having a male and female picture as I haven't tried that.
The obvious thing to do is to remove anonymity from the Internet. However then what do we do about peoples rights[1] to free speech?
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[1] Not every country gives this right to it's populous.