Who isn't annoyed when something familiar and functionally understandable gets changed all around?

If you’re not bothered
•  when the supermarket or drugstore layout gets completely redone,
•  when two-way streets change to one-way, or one-ways get reversed,
•  when bus lines get rerouted or trolley stops are eliminated
—in other words, when you have to relearn the navigation of your territory—I’d like to hear from you.

It’s my opinion that suddenly being disoriented in what should be a familiar place, and either getting lost or having to spend extra time working out a new route, bothers everybody.

So why do website designers keep changing their sites around?

Whether it’s Hotmail or your pharmacy’s online prescription page, the public library or your favorite seasonal merchandise website, don’t you hate it when you come online and nothing looks as it did yesterday, tabs are different, you don’t recognize the displays, and you can’t go straight to what you want?

Why do they do this?

Is there anyone who likes these arbitrary changes just for the sake of change?

I know why they do it in a supermarket or department store, but why online?

Boredom on the part of the web team is no reason to deprive users of functional familiarity.