You make assumptions that I can afford £15 a month (which I cannot, something would have to give), yet castigate me for making assumptions - is this not hypocritical? I live in a rented flat, storm damage would be covered by buildings insurance rather than contents insurance, thus the responsibility of the landlord.
Er, not really, no
Also, I assume you have neighbours. Say one of them, or one of their guests, gets drunk and accidentally sets fire to their flat which spreads to your flat. What happens then??
You cannot afford £15 per month and yet you can clearly afford broadband.