SO, why does Internet Explorer suck so bad?

[mkt]

I am one of THOSE people who still automatically clicks IE, I do use Firefox or Google Chrome as well but IE is that "homey" place I accidentally find myself often.

Recently, it just doesn't work. If I have more than 1 tab open or a Flash Player, nothing works. Or it locks up.

I do scan my laptop regularly but not sure if this is a system thing or an IE thing. I don't mind never using it again...just trying to understand why it sucks.