Re: What's this obsession with headphone jacks of late ?
A battery will wear out (2 years?) before a headphone jack will. But I guess it also depends how well the phone is made, and how easy repairs / replacements are (a swappable battery is easier than a soldered jack).
The only time I've had a headphone jack break is when knocking/dropping the thing it's plugged into. Which by any case, if you knock/drop could also break anything (bluetooth included).