Generally speaking, OEM's do strange things with pad compounds to get particular characteristics. 49,000 for OEM pads seems pretty reasonable. I don't know what kind of aftermarket pads are available, look around and replace with something 'premium' and be happy for another 50,000 miles. If you are feeling really ambitious, replace the front while you are at it too.

How do you like your freestyle, is it the seven passenger model? Are they all seven passenger?

Archie