Do you believe any of the 9/11 conspiracy theories?

Yeah, I'm a little late on this I know. I was bored and I did some research, and I do find it odd how the buildings collapsed. Why did they disintegrate into dust as if there were explosions inside? The way they fell was very uniform just like when they do building demolitions. Why didn't chunks fall off if the reason for the collapse was heated I beams? Also, why did it fall so fast all of a sudden? I have fires in my fireplace all the time and usually things collapse in one area and then others--it doesn't all just disintegrate. Maybe that is a bad example, because of the scale, but I'm just trying to figure it out.