Re: Let them pay
Seriously? Blocked outlets and filters requires a call out?
I guess that answers the question "who buys extended warranties?" The people who can't figure out the most basic of domestic jobs.
As for your flooded kitchen story.. would an extended warranty cover the replacement of all of the damaged floor and units or would that be a home insurance claim anyway?
A bit of simple maths to work out the mean time between failure and the average cost of failure is enough to rule out extended warranties for me.