Walking the dog will be a challenge

You could walk the dog inside the house and still get exercise

Best place during a zombie apocalypse

It needs missiles

Invest in insurance, and maybe yes.

In a Photoshop picture? Sure. Go ahead, digitalize me and zap me right in, Tron style.

How can someone live in a Photoshoped house

I can totally see some spy/action movie planting some explosives on one of the supports. That would make for a pretty cool scene.

No because erosion

It looks like it has little legs

Found it. It's an island called Khao Phing Kan in Phang Nga Bay. The above islet when it's not photoshopped is known as Ko Tapu.

Ever since it was featured in The Man with the Golden Gun, it's been known as James Bond Island.

https://en.m.wikipedia.org/wiki/Khao_Phing_Kan