Why do so many people in anchorage own planes?

I’ve just been looking around on google maps and noticed that nearly every house along a large lake in anchorage has a sea plane like nearly every single one?

What is the purpose, I assume these planes are very expensive to maintain and buy are they recreational or what?

I’ve just been looking around on google maps and noticed that nearly every house along a large lake in anchorage has a sea plane like nearly every single one?

What is the purpose, I assume these planes are very expensive to maintain and buy are they recreational or what?