Digital Photo Frame Aspect Ratio

I have been in the market for a new digital photo frame recently.  While searching on Amazon, I found some really great looking frames, but they all suffered from the same problem.  They were widescreen photo frames.  This irritates me.  Most cameras take 4:3 pictures, not 16:9 pictures.  This is true for both the analog and digital world.  If 99% of all photos are 4:3, why are there so many 16:9 photo frames?  This doesn't make sense.  A 16:9 frame will display 99% of your photos with either black bars or stretched.  What is the point of that?