Exactly, why should I go soppy eyed over one US attack not affecting me 8 years ago when hundreds of thousands have died since? I don't even feel a strong connection to the 7/7 bombings and that was in my own country.
Naturally I deplore all killing, those responsible were wrong to do so, so were the IRA, so were the various guerrilla groups across Africa, so were the 'coalition of the willing' when they bombed towns of civilians. The US does not have a monopoly on grief.