I went to see the Libre and as soon as they said it would be hanging out of my skin I walked out - piercings revolt me and the idea that a (not insubstantial) device would be waiting to get knocked around while half inside my arm? Nopenopenopenope!
I upgraded my friend's old Win machine with Mint to give to their 8yo girl. It took her minutes to figure out how to change the wallpaper etc. I find that adults are a bigger problem: most unwilling to even try Firefox, never mind install from the Mozilla website. One of my friends hates her Samsung UI but won't change because that's all she's bought for 10+ years.