It's very easy to take things personally when people are actually just expressing a different point of view. Half the time they're not getting at you personally just saying what they think - everyone's entitled to an opinion.
I argue with a few people on here but frequently agree with the same people and if I don't have an opinion (Wynonie

) I just don't say it!
I also know when I'm posting something that is potentially going to be controversial and I quite enjoy lighting the blue touch paper and retiring. I think you know, Jambutty, when you're posting a new thread that there's going to be a strong reaction for and against it, otherwise why post it in the first place? Admittedly sometimes I get a bit frustrated when I post something that I think is a positive and others disagree but hey, we can't all think the same can we?
PS - I rarely use karma, I keep forgetting about it, but I do enjoy getting the odd bit every now and then.