I had to pull up a calculator to convert 16km to 10,000 miles.
The VS650s are incredibly reliable bikes. The only thing you will have to attend to for quite a while is oil and filters, and valve adjustments.
At 16,000 km you are right about the point to replace your rear tire if its still the original from the factory. The front tire can usually go twice as long as the rear.
Other than that all it wants is gas and go go go.
edited:now that I think of it, your bike is a 2000 - I would replace the front tire too if its original, would be pretty dried out by now.