”I've come up with a set of rules that describe our reactions to technologies: 1. Anything that is in the world when you’re born is normal and ordinary and is just a natural part of the way the world works. 2. Anything that's invented between when you’re fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it. 3. Anything invented after you're thirty-five is against the natural order of things.”
Indeed smart devices are the epitome of useless tech. In fact, I would argue they make life worse if one is conscious about their privacy and computing.
1) a smart watch can read notification, messages, listen to music, podcasts, audio books, receive and make phone calls, voice chat, group chats;
2) a eink device to read books, browse internet for news (hackernews for example), emails;
3) game consoles or pc + project + vr for entertainment;
4) a tablet with keyboard for work (with access to servers in cloud) and netflix, youtube.