"worth" depends completely on you. The things to keep in mind is that there are not so many straight physics jobs out there, though with the mathematical and co

"worth" depends completely on you. The things to keep in mind is that there are not so many straight physics jobs out there, though with the mathematical and computer skills you will develop you will probably be well equipped to handle several industry jobs. The main question is, though, do you LOVE physics? That's the only reason for doing a PhD. If you just ABSOLUTELY have to do this thing ALL the time.