Let's look at the other side of this thread.

So, when/why did you vote kick a party member/s?

I haven't been in a party that has vote kicked someone, although I did 'kick' myself once from CC when learning to heal. I caused 3 wipes and the tank left (can't blame him really). The party was happy for me to keep going but I just felt under skilled. I said sorry, that I felt it was beyond me at that point in time and left.