Just going back to what moose said about spiders, my missus is arachnaphobic, I mean if there's a daddy long legs in the corner of the room 6meters away, she freezes and breaks out in to a cold sweat. I've had her ring me at work to come and get rid of the spider in the corner of the room. However when you say I'll kill it and get rid of it, I get hit and told to catch it and put it outside as it's not the spiders fault it is where it is.
So to keep her happy I catch them and put them outside.
I guess what I'm trying to say is that we all have our little phobias of some sort, it's just how you deal with them. As scared of spiders as my wife is she doesn't think they all should be killed or that they are discusting creature etc. and has since with a little help from me learnt to control her fears and doesn't even notice them half the time.
If only silly old people could be as understanding.