We had a keypad smart lock on our front door for a while, but we got tired of having to reconfigure it and replace its batteries when they occasionally died; now we have an ordinary lock once again.
My wife bought an Alexa speaker for the kid's room, to help with setting alarms and remembering things, playing podcasts at night, and to use as an intercom: but all electronic devices in the kid's room exist in a baffling state of perpetual reorganization, everything with a plug being unplugged, moved around, and maybe or maybe not plugged back in, seemingly every day, for no apparent reason; so the speaker is mostly unusable.
Smart bulbs, I have never really seen the point: turning lights on and off is not difficult enough that any better a solution than the traditional switch would seem to be necessary.
I suppose I spend enough time dealing with tech as it is, and when I am home, I just want things to work. Simpler is better.