Personally, I have no doubt that AI will have as much an impact on the world as the Internet did starting around 1990 (for those of us old enough to have been around needing to convince our companies, and our family and friends, that this was going to happen.)
Quick: what is the Internet's killer app? Bet you didn't think of one right away! Why not? Because it's in most
everything. You interact with the Internet dozens if not hundreds or thousands of times per day.
Likewise, AI will replace most interfaces of systems of every type. AI will replace most analysis and administration tasks. AI-powered devices will replace most (all?) dangerous tasks. AI will assist in about every human task imaginable, including both practical ones and our entertainment.
I was going to say the only thing you do which won't use AI will be lying on the grass in your backyard. But then I thought of the AI-robot who 'thinks' -
"hey, it's sunny out and I can 'see' J is lying in the backyard mid-afternoon. Usually he likes a glass of ___ around now. Maybe I'll bring him one. Chances are, he'd appreciate it." So even this scenario will have AI operating around you.
It's a good question,
@Usain , but I don't believe we need to think
which activity or system will benefit the most. AI will be a part of ALL of them IMHO.