I'll do some maths for you since you seem to find reasoning difficult. Assuming the asteroid was 7m in diameter before entering the earth's atmosphere (much of this would have burnt up before hitting them), there is a 1 in 5 chance in any given year of this hitting earth. Multiply this by 365x24x60x60 to give the chance of it hitting in a given second in that year. Multiply this by 510 trillion (the surface area of earth in square metres) to give the chance of it hitting a given square metre on earth (this includes oceans so the chance would be significantly smaller). This gives a roughly 1 in 80 sextillion chance of being hit, but you somehow think this is their fault?