That you can leave for vacation, forget about this automation until well into your trip, and still be able to turn it off without calling the neighbors or your kin who might be living nearby.

Or just have it not active if nobody is home.

The most basic Wi-Fi enabled plug is cheaper than a timer switch.

They start at $6 price goes down to under $5 if you buy a 4 pack.

Different schedules. If I weren't worried about having it on for an hour longer than necessary, I guess a timer would be fine.