You guys say "I was only n years old" like that somehow makes it all right. Are you implying that it's impossible to have a well-informed opinion when you're barely legal voting age? You should be saying "I wanted to vote for Bush, but that was back when I didn't have a clue about the world."
By the way, it's been about 7 years since the U.S. invasion of Afghanistan in late 2001 and about 5 years since Iraq became a target. I was 14 at the time of the 9/11 attacks. I don't know when exactly you were 17, but it's not like there haven't been enough notable events that might have made you question the Bush authority. Unless you also agreed with, say, first deploying a team of weapons inspectors who find absolutely no evidence to back up an invasion and then invade anyway.
I would respectfully disagree with your characterization of this situation.
Regime change in Iraq is a policy which predates the Bush presidency, signed into law by President Clinton (the Iraq Liberation Act of 1998). The weapons inspectors in their testimony to the UN mentioned that Hussein's regime had deliberately provided misleading information, a material breach of the UN resolution (and the 17 that preceeded it). Regardless, the believed stockpiles of weapons of mass destruction were only one of many issues with Saddam Hussein. Hussein's regime was a known sponsor of international terrorism, a proven, indisputable fact, so that reason has been validated. Hussein had promoted instability in the region by threatening his neighbors and his own people, including mass murder of his own people, including chemical weapons attacks (which is a good reason to suspect he had such weapons since he used them) and attacking a neighboring country. Hussein repeatedly attacked U.S. planes and those of its allies patrolling the no fly zones, which are acts of war. Hussein also attempted to assassinate President George H.W. Bush, another act of war. Documents and sources since Hussein's being removed from power also demonstrate that while the stockpiles that had been believed to exist were no longer there / removed, Hussein clearly had active programs ready to launch to reconstitute them, including a nuclear program (see this translation of documents seized from Hussein's government -
http://iraqdocs.blogspot.com/). So the threat was there, it had just not fully gathered at the time of the invasion. The incredible corruption revealed in the "oil for food program" in the aftermath has also been extraordinary.
Some of the intelligence was clearly wrong/incomplete, but it again predated President Bush coming to power. Saddam's ties to Al Qaeda and Osama Bin Laden were regarded as common knowledge in the news media and on Capitol Hill prior to 2001. Amazingly, these same news organizations and politicians now regard it as a complete invention of the Bush administration and can't remember even their own reporting. Some of these reports are still out there online - here's a video on YouTube which illustrates this point - it is an ABC News report from 1999 -
http://www.youtube.com/watch?v=18uxVYN-5iY - 2 years before President Bush took office. Moreover, there were far more intelligence sources showing the same information than those in the U.S. both before and after President Bush took office.
It can be said that the war was still a bad decision, given the expense and loss of life and the benefit does not outweigh the cost. That's a legitimate view point one can hold. But that doesn't make it appropriate to turn this into some grand evil plan that President Bush, Prime Minister Blair, etc. carried out, because in order for that to be true, they would have had to have extraordinary supernatural powers to manipulate intelligence predating their administrations in not only their own countries, but in many others.