The fact that we can communicate with computers using just natural language, and can query data, use powerful and complex tools just by describing what we want is an incredible breakthrough, and that's a very conservative use of the technology.
Smartphones changed day to day human life more profoundly than anything since the steam engine.
I've never experienced the massively life changing effects of having a smartphone, and (thankfully) none of my friends seem to be those people who are always looking at their phones.
For instance, I remember the time when chatting online (even with people you knew offline) was considered to be a nerdy activity. Then it gradually became more mainstream and now it's the norm to do it and a lot of people do it multiple times per day. This fundamentally changes how people interact with each other.
Another example is dating. Not that I have personal experience with modern online dating (enabled by smartphones) but what I read is disturbing and captivating at the same time e.g. apparent normalization of "ghosting"...