The smell, worry about it being left on. I've got kids, they like to cook, I'm sure they'd be capable of dealing with a gas cooktop (we've got a bunsen burner for science stuff) but it's just nice not having that.
We don't get gas pipeline connections here, we get bottles that a company comes and replaces.
Compared to gas, I find induction just as responsive, more powerful on the highest setting. A nice feature is the auto heat which gives it more power until the pan is at the target level then reduces. I also think (but not sure) that the lowest level is far cooler than the lowest gas setting was, making it easier to use for baking - melting butter, chocolate, things that require gentle warming.
So, as I say, other than the specific flames around a wok, it's better overall. I do have an induction wok, it's not as good. It's fine though, I wouldn't trade or bother with a separate gas cooktop just for that.