Since I myself do not have the guts to commit suicide I can't expect an entire species to, I do however not see a problem with the human race going extinct and only time will tell, if left to the masses to determine the species future then it is fortunate that we might not even need an extinction level event to occur as they will do it all themselves, saving the universe the effort. I will be long dead by then and reiterate that how I see it now, there is nothing to lose if humanity were to go "poof" just another spec in history. Although my opinion is not fully formed and definitely a generalisation it is still my opinion and is not intended to cause a ruckus. Haha I don't get attached to opinions in that fashion.