Herod
What he said is not rubbish. The answer to your points is that aircraft should not be allowed to fly over war torn countries where you are likely to be shot at so in cases like MH17 the regulators are at fault
I repeat the vast majority of accidents are pilot error in handling a serviceable aircraft or one with problems where those problems in themselves should not take an aircraft down if handled correctly
This like the vast vast vast majority of accidents will likely be pilot error but compounded by mechanical failure! But yes there is a very slim chance it could be something else
Pace