That's the problem -- you use it for work. Get a phone and only give the number to close friends, if that. For clients, you coud use a Google Voice number which is not forwarded directly and just sends you e-mail alerts.

This is the correct answer. You're running a business - enforce business hours on your business contact number.

Does it work in Europe/Italy?

I remember looking into that and I'd have killed to get it, but it was only available in the U.S...

When an emergency does happen you're gonna wish you had one. Car accident, wife going into labor, you'll need it.

Other option is to keep two phones, one personal, one private.