I just got this laptop so it's one of the default backgrounds that changes every so often. I have no idea how long it will take me to get around to changing it. Haha.
I have it so it switches between some of our wedding pictures. I'll probably change it soon to include some pictures of E my background on my work computer is a picture of palm trees I took on our honeymoon.
I don't use my laptop very often. The background is a closeup of DH's army uniform with his name tag (our last name). I took it the day he deployed to Iraq so it's been my background for almost 4 years.
Until recently it had been the same since we got this computer in 2012, just one of the basic flower wallpapers already on the computer. It's currently a picture from DS's 1 month photo shoot.