I am not sold on using the live photo feature on a regular basis, but I already came up with one good use. I took a live photo of my daughter looking serious and then smiling, and after a few attempts managed to capture the transition to a smile in a live photo. That is now my watch face on my Apple Watch. So every time I check the time, she smiles at me. I think that's pretty cool. A typical live photo may not be all that interesting, but with a little planning you can get some nice ones.