There's a hole in my pants

And it's not where you think it is. I know. I was as shocked as you were. It's on my knee. And when I say pants, I mean plural. Like I have this same problem on about 4 or 5 pairs of slacks, which is kind of a bummer as they're fine apart from that. Oh, it looks like this.
That is my sexy knee right there. So I have a hypothesis as to how this happens. When I drive, which is every day 50 miles round trip, I have an automatic. As such, my left leg has very little to do. So I seem to bend it and the crease tends to be right where these holes are popping up. What's that you say? A close up of my pasty knee? Okay...I can do that.
So I need to go pants shopping. Any suggestions on more durable pants? This stuff really only happens to me.

Oh, and for my friends and family in PA. Your state just became the most awesome place to live.