This unit is the second one I have had. I have also used gas for many years. Mine now has the space in the center for a big pot.
Induction is fast. As fast or faster than gas for boiling water.
There is no indication when you look at the burner how much energy is being delivered. No flame to see.
The tops are easier to clean, especially compared to the regular glass top cooktops.
They are safer. If you put an empty pot on or run a pot dry it can sense the heat rise and will shut down the burner.
They also cut the power if the burner doesn't have a pot on it. There is a delay, usually around 30 seconds. Good ones these days know the pot size so every burner will heat your pots. You can put that small sauce pan right in front while you stir continuously and not have to reach over a larger pot to do it.
Mine also has a Lock function. I can lock it and it won't turn on accidentally which is good if you have children around. In my former job I saw several fires started when a stove turned on magically....
Now you will have to deal with the fact that your cookware needs to be magnetic. When we moved to Germany I had to get rid of my French copper and stainless pots. Shipping them back would have been ridiculous and the ones I had wouldn't work on induction. I think the new ones will, but PRICEY. You might have to be careful with cast iron pans, the rough bottoms could scratch the glass. I have heard of people using a thin metal shim. I was never a cast iron evangelist myself, so heavy bottomed stainless works for me.
Good luck with any downsizing. We have cut back in size. even if this is the biggest kitchen I've ever had. Germans are amazed. But our place is barrier free and we hope to age well in it. It is hard to move out of an area you like. It probably won't save you any money to stay and buy a new place even it smaller.
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