My computer seems to get a pretty good workout every day as I constantly use more than one program at a time.
I also have two monitors hooked up to one PC so I don't have to keep opening and closing windows to look at information.
They are making computer monitors big enough now and using split screens, so you don't see 2 monitors like this as often, but it still comes in handy.
I think this helps me multitask better when I am on the computer. My computer doesn't usually have any trouble keeping up with me and does a much better job of multitasking than I do.
Sometimes I am a little slow at buying the newest computer technology, but I really like having more than one processor. It makes a big difference in speed and performance.