4K videos are good for future-proofing your memories. I am pretty sure in the next 2-3 years 4K TVs will be popular and watching home videos recorded in 4K will be awesome. I currently have that ability with my Note 4 but I hardly use it because: 1) phone gets really hot, 2) it eats up storage like no tomorrow, and 3) phone limits the recording to 5 minutes. I let my GoPro Hero 4 Black handle the 4K recordings.