My mom has a Roku, but I don't know how often she uses it. My father bought it a few years ago. It's old enough that she can't download TV apps to it, which proved crucial earlier this summer when she wanted to subscribe to Disney+ to one month to watch Hamilton but couldn't access Disney+ on that device. I got her an Amazon Fire Stick and installed the Disney+ app on there and she was able to watch it just fine. I figured she'd have an easier time operating the Fire Stick, plus she's a Prime member so I thought the Amazon device made more sense (not to mention it cost me a lot less than an Apple TV would have, which matters because I'm not sure how often she uses either the Roku or the Fire Stick). I think my father got the Roku in part because it appears to have a slot for an SD card, so it was an easy way to view pictures on the TV (compare to using a slide projector in the old days).