call me over simplistic, but if a burgular knew that if he was to enter a house, and the occupants would be cowering in a cupboard dialling 999, i dont think he'll be fussed about entering and taking what he wants.....
but if, on the other hand, he knows that if he enters a house, he has got a good chance of being shot/stabbed/maimed by oiling oil (

) and if that happens he'll STILL be going down for attempted robbery, whilst the home owner gets away with a wagged finger - i somehow doubt said robber would be so keen no?
with this martin case, house breakers now seem to win both ways... they break in - if there is no resistance, they get what they want, if the house owner puts up a fight, they sue for damages....
generally im an advocate for turning the other cheek, but this is my HOME we are talking about. admittedly, at the moment that does not have a significant meaning as it will when i actually own my own home, and am raising a familiy in it but the theory still stands. Why should i sit back allow some **** to violate that and make me and one day my family be afraid in my own home?