Don't get me wrong, if I woke up in the middle of the night to see a big spider snuggling down beside me vying for the duvet, I'd shite myself.
But seeing a big spider merrily stoating around your bathroom, garage etc... minding its own business and generally just trying to keep its head down and keep the fly population down. Good luck to them.
Now horse flies on the other hand. They are truly evil b*****ds (been bitten twice on the foot.. both times my foot swelled up to twice its normal size and I had to take to my bed). Of course, good old Comrade Spider will quite happily have a horsefly for his tea. The only problem is, of course, that horseflies fly and spiders don't.
So what we need is flying spiders. There, I've said it.