1999 Toyota Avalon water pump, should I change it now?

Engine Mechanical problem
1999 Toyota Avalon 6 cyl Front Wheel Drive Automatic 64K miles

I have a 1999 Avalon with only 64K miles. I wanted to change the belts, which have never been done, but the dealer said I should also replace the water pump at the same time. The cost then would be almost $1000. Do you think I should do so? Their argument is that a new timing belt puts more pressure on the pump's bearings, and it would likely fail quickly.

Is this just dealer BS, or is that good advice?

Thanks.