Geek, you posted reviews for what products? I see mice, I see keyboards, I see Microsoft. So I'm seeing reviews taken out of context from many different products. Sure, every product is going to get some bad reviews from people, so take many reviews from different products is hardly compelling evidence. I'm sure any of us could do the same for wired products.
I've had two Microsoft wireless mice. The first one lasted me 5 years with daily use, the outside of the mouse wore out before the innards did. I replaced it with another Microsoft mouse which I've had for two years. No issues with either. Batteries lasted for months and months. Before those, I had a Logitech wireless keyboard and mouse set. Only issue I had was that the mouse was a battery sucker. Had to change every month. I have two wireless keyboard I use regularly at the moment. No problems with either.
Mrs. J, if you do come back, could you try with a wired PS/2 or USB keyboard and see if you still get the same issue? Generally, I've found wireless products to be ok, but it's possible that your keyboard is now faulty and sending out the wrong signal.