On Cheeseburgers and the Treif-Stigma

For the last few days, I have had a ridiculously intense urge to eat a cheeseburger. Maybe even a bacon cheeseburger.

Note: I have never eaten a cheeseburger or bacon before.
Note 2: I have, however, eaten cheese together with meat - albeit a long time ago & accidentally (at least initially; I was eating lasagna - I didn't realize it had meat in it until almost the end).
Note 3: I once - again, accidentally - ate a piece of ham that was stuck to the bottom of my cream cheese bagel. It was nothing special.
Note 4: For some reason (maybe halakhic definitions, because I'm apparently ridiculous like that), I haven't had a problem with eating chicken and cheese together for a while (except, of course, the periods of time during which I've decided that I wanted to keep strictly kosher. I'm apparently religiously schizophrenic).

Here's the thing: WHY DO I CARE?

In other words, what's with my insistence to resist the temptation when I don't even believe?

I am so bizarre.