I personally really get into a lot of Death Metal , brutal Thrash and other sub-genres that have some pretty intense yelling, screaming etc. . Basically a wide variety of music that incorporates these styles of vocals.
It took me a little while to understand and or appreciate it for the most part ( other then a few vocalist like John Tardy of Obituary who I loved instantly ) but I truly feel my musical world has been expanded for the better , much bigger, much better and more open minded.
It's not for everyone and I don't get emotional about others negative opinions of the sub-genres. It is obviously not for them any more then cheesy pop music is for me . I find pop and it's musical expressions extremely obnoxious to the point of having to physically suppress outbursts if subjected to too much of it and have had these feels of disgust and displeasure in regards to pop ever since my pre-teen years .
To each their own...just don't bring your pop over to my area...
EDIT: This is a general statement and not intended as a response toward anyone as I haven't even read any of this thread.