Backup power memory for appliances

Ok its 2012 tell me why I am still resetting my Range, microwave, appliances with digital displays still after a power outage, I am talking about appliances that are less than 4 years old? Remember VCRs from the 80s and 90s with the flashing clocks that needed to be set or even in some cases actually reprogrammed that college educated people could not figure out, or not have the time to do and just let it flash at 12:00.
I would like to hear what people think about this. I mean I really do not mind putting a AA battery or two in my range or whatever appliance once a year to hold the memory settings when I have those random power glitches at 3:00 am or whenever.