I've seen a lot of the oil threads and read a bit on the bobistheoilguy forum, and I see people saying you can go a lot longer, but I like to change mine around 5-6k. I don't think it's unreasonable. As long as it's not low then you aren't burning or losing oil. The maintenance minder is more of an "idiot" light for people who would never change it if they didn't have a blinking reminder. It also helps keep track of when to change filters and stuff. It's not all bad.
I heard a great line that the light is for those same people who if they didn't have a gas gauge would be surprised when they run out of gas in the middle of the street because the car didn't tell them they needed it. You can't trust people to keep track of anything.
I change mine at 5-6k because my maintenance minder is still at like 30-40%. I went to 15% once, it was close to 8k and the oil was real dirty looking. To the point that the guy asked how long it had been cause it looked bad.