To seriously respond to your inquiry, though:
As you know the events of 9/11 were planned and carried out by Al Queda with Bin Laden at the helm. Al Queda's major base of operations was located in Afghanistan and they received political and financial support from individuals and nations from all over the world.
After 9/11 Bush sent the military and CIA into Afghanistan. That was a good move. They trashed Al Queda's operations and overthrew the Taliban. Bin Laden went into hiding, which is the best outcome other than capturing or killing him. They've had a fair amount of success with capturing many key members of Al Queda. These are all good things for fighting terrorism.
Then there's Iraq. Bush gave the following reasons for invading Iraq, in chronological order (I put them in chronological order because he started with one, and then changed he reasons as he went along):
1. Iraq harbored and supported terrorists.
2. Iraq had weapons of mass destruction.
3. Saddam Hussein refused to comply with UN mandates.
4. Saddam Hussein was a despot who terrorised his citizens.
5. Saddam was "a threat".
1. In a supreme stroke of irony, it turns out Iraq is one of the only countries in the middle east without any ties to terrorism. There has been not one single shred of evidence to link Saddam to terrorism in the past 10 years or so. The last thing he could be accused of being involved in was the foiled assassination attempt on Bush senior in the 90s. There are no financial links, and there are no significant social links between Saddam and terrorists. No known terrorists were being sheltered in Iraq, no training camps. Nothing.
2. This was true during the Gulf War. It wasn't true after. Not only have they not found anything that resembles a functional weapon (as far as I'm aware, they've found a few parts here and there) or any evidence of a weapons program, but there was never any intelligence that said there were any in the first place. Bush's claim that there was evidence of WMDs in Iraq was based entirely on a report from a single informant. Ignoring the fact that the informant was considered unreliable in the first place, the CIA always gets confirmation from multiple sources before they consider any information "intelligence".
3. This had been an ongoing issue with Saddam since the Gulf War (before it, really). The funny thing about it is that Saddam actually did comply shortly before the invasion occurred.
4. This is the only true, real, and good reason for getting rid of the bastard. I have a feeling that if Bush had given this reason from the start, he would have met more resistance initially but he'd be in much better shape today.
5. This one is so vague it's hard to say it's not true (which I'm conviced is the intention), but I'll go ahead and say it anyway. The man was a bat-shit-crazy murdering sonofabitch, but the only people he had the power to theaten were his own citizens. I'm pretty sure he knew darn well that if he did anything to provoke the U.S. he'd be crushed like a bug, so he focused on maintaining control of Iraq.
Am I glad he's gone? Yes. Do I think it was worth it, or that the world is a safer place because of it, or that the Iraq invasion hurt Al Queda in the slightest? No, not really. In fact, I believe (but I'm not an expert so I can't say for sure) that the Iraq war has hurt the 'war on terror' by expending resources that could be used to search for Bin Laden/Al Queda or to deal with other nations that actually do have strong terrorist ties like Syria, Lebbanon, Iran and (our so-called ally) Saudi Arabia.
I hope that is the kind of response you were looking for, love.