Why the Button Fly?

I swear that the last 5 pair of pants I bought were button fly. WHY?! I hate button fly. What's wrong with the zipper? It is suppose to be more "fashionable"? You cant even see it. I googled this topic and I found an interesting blog about it that I totally agree with (see below). I dont know anyone who would prefer button fly vs. zipper. If you do, please let me know. Otherwise, I think we should get rid of the button fly.

As I was putting on a fairly new pair of pants today, I wondered why the clothing company had decided to use a button fly instead of a zipper fly. Three of my four newest pairs of pants have button flies on them, and while I like the pants for other reasons, I can't stand having to button them up. What exactly do people find so compelling about button flies, anyway?

The way I see it, zippers have several advantages:

They are easier to use: Grab the tab and pull vs. find the slot, hold the button just right, insert the button through the slot, repeat.
They are quicker: They take less than a second to use, compared to five or more fumbling seconds with the button fly.
They are less visible: One simple flap easily covers the zipper, as opposed to a second flap that bulks up the fly area and can be seen from the right side.
Now, I suppose some may view the third bullet point as an advantage for the button fly, but I'm guessing most are with me on that one.

So why would anyone prefer button flies? Do they last longer? Are they less likely to come undone? Are they part of a larger trend toward 19th-century style?

Can somebody enlighten me on this one? If anyone out there prefers the button fly, please post a comment explaining your rationale.

Check out the comments on this post, they are hilarious.