How about a third option? "We do this because it's what our users say they want." Of course, users lie, and although they say they want a replaceable battery,

How about a third option? "We do this because it's what our users say they want." Of course, users lie, and although they say they want a replaceable battery, almost nobody actually replaces the battery. You wind up making a huge design sacrifice to implement a user-swappable battery that nobody swaps.