Design Novice

I've never claimed to be any sort of design expert, in fact I'm sure a trained designer would think my home is boring and safe with no design risks taken.  I keep seeing this trend pop up though and it's one I just can't understand.  It doesn't make sense to me, I don't like the look of it and it seems so pointless.

I don't understand decorating with empty frames.  Let me show you some examples.

I apologize if you love the look and have it all over your house, it's not my style and I don't get it.

Also, I've lived in our house for 10 months now and the only picture I've hung used existing nails that were ugly and heavy duty.  That's right, one picture in 10 months.  I can barely hang pictures I like, never mind empty frames.

As an ironic side note, I am currently working on a project with an empty frame that I hope to post later today.