For people who love to cook -- or at least love to eat great home-cooked food -- control is probably the most important feature of a cooktop. It's why many serious cooks prefer gas to electric: Gas burners are more responsive when you adjust the dial. The temperature change is fast.
Induction cooktops are as responsive as gas to a turn of the dial, and they've got another thing going for them, too: more settings. Induction allows for much more precise control of heat, with more temperature increments and better performance at very low heat settings. In this way, induction makes cooking delicate sauces or just keeping food warm a lot easier than with a gas flame, which can often falter on the low setting.
And finally, a benefit that rivals speed for practicality ...