It's contradictory (and ridiculous) saying on one hand that you use IE because you don't care about web browsers enough to switch, and on the other hand spending tons of time arguing about it with people.

People use IE because it comes on their computer and they're too lazy or apathetic to try anything else, or are too used to it to want to change, or don't know anything else exists, or are too ignorant to recognize something better when it comes along. No other reasons. There's nothing wrong with being apathetic or lazy; having good web browsers isn't everyone's top priority.

However it's ridiculous to say that you use IE because it's better. Say you use it even though it's worse because you don't care that it's worse, that would be the truth. I believe that the "IE is cool!" crowd is quite often an example of nonconformity for the sake of nonconformity. Or else I imagine a grizzled old man proclaiming "I don't use banks! Don't trust em! I keeps my money in a coffee can in the Frigidaire!"

I define "better" as working better for the intended purpose of a web browser. You can define "better" in different ways, such as "my 1970 Ford pickup is better than your 2004 Camaro because it can haul more wood", or other such ways, in which case sure, IE may be "better" than Firefox for you. People have different values. Maybe people like it because of the big blue e, because they like blue.

But IE is objectively inferior when it comes to the things I deem important about being a web browser. Things like adhering to web standards, offering more options and better functionality, being more customizable, being more secure (whether it's because "MORE PEOPLE TARGET IE!" or because Firefox is designed in a better way, it doesn't matter (though the latter is more likely true)), etc. etc. Not being made by a company full of convicted criminals is another nice thing. Being cross-platform is yet another. Better ad-blocking capability, typeahead find, nicer interface, superior bookmark management, better privacy controls, better download management, etc. etc. I've read the opinions of IE developers who themselves claim that IE is a piece of junk. It's at least 5 years behind other browsers, before the latest beta was released (which was the first release in how many years?).

(I do code my web pages to be broken in IE, or at least make no effort to make sure they look right in IE.)