Enjoying Scenery

i drove out to kiawah island this morning for my last day at arborscape tree preservation. on the way i was just admiring God's creation and enjoying the oak canopied roads. once i got on the island i began looking at some of the houses. i saw allison and i's dream house (only like 3x bigger than we would ever need)!!! it was on the marsh and was only like 4 stories. it was quite a spectacle. but my real question is why would a family ever need a house that big?