I am very concerned about why Obama lied about the death of Osama. Please tell me why?

Story changed 10 times and now white house gone silent on raid details. They don't release photo. They throw body in sea too fast. They don't release the DNA report to public. That website where Al qaeda confirms OBL death is a public website and we don't know who is behind the keyboard. If someone with yahoo id of ayman alzwhairi says I am alqaeda, it can be fake. They say OBL will release video if he is alive. No he would not because he wants to avoid being hunted and captured. My quesiton is WHY Obama lied? To win election? His supporter say election in 2012, so its too early to stage OBL death. In 2012 if he did this same lie it would be more suspicious. 18 months till election. 18 months is in window for election. He also announced 18 months before election 2008 that he running for president. I am suspicious of Obama. He lied to get popularity because economy is so bad? I think he knows America has dumbed down a lot over the years and that if they can buy WMD lie at face value, then why can't they buy OBL death lie at face value? Think of it. He can kill 2 birds with one stone then -- fool the public and then ensure his re-election too. I also hear his supporter say, "I trust the word of NAVY seal". Navy seal don't talk to media. Come on don't kid!