hillbilly bob

What's deal with .xxx domain names? Icmregistry sells them like hotcakes to a fat lady,for rediculous prices..The .xxx search engine seems to look and work fine . And I understand that .com is the bread and butter of the internet. But ,I'm fucking missing something here . I have around 300 of what I thought were Bad ass names and can't get an offer on one let alone sell any. Yeah,I'm new to the game but can someone give me some insight on why people act like there the fucking plague. I'm just looking for some knowledge not some smart ass to say ..Just let them expire. Thanks