If Binladen was unarmed why wasn't he captured alive ?

Would you like to arrest someone who encourages the use of "Suicide Vests" and who may have been wearing one? Osama said MANY times that he is totally willing to die fighting so would you walk up to him to place him under arrest? He wasn't captured alive because his followers would have taken people hostage in an attempt to exchange him for them. How do you know they weren't ordered to capture him alive if he surrendered, were you in the White House when the operation was being discussed? Osamas wife hasn't made any statement that Osama put his hands up so he didn't try to surrender.