Who often do you change the belt?

I replaced my 06 Suzuki S50 with a brand new 2012 Stryker yesterday. I rode to home from the dealership and I loved the Stryker.

I read the manual and I was surprized that it is recommended to change the drive belt every 2500 miles (4000km), also I was shock to know that the belt price is minimum $500.

I am not a handy guy, and with my current conservative mileage, I would be changing the belt every two years at a cost $800 approx. !!

Who often do you change the belt?

Thanks

Smikail