I've personally found no more need to buy one ... I had alot of thoughts about getting one ... I realised that I have no need for lower tunings that I cant achieve with my 6ers... so I just decided to stick with 6ers ... I've seen alot of people with 7's though that just chug the low strings ... at that point why not just tune the guitar lower? Its an image thing with that part I guess, 7's are fine and cool if you actually can utilise one, 8's and up? I'll just put my foot in my mouth now and say its silly, but then again ... who needs a bassist when you've got 8?
then you could ask "Why are you here?"
I LOVE GUITAR PRON :P