Sometimes a design is bad and people make the wrong tradeoffs. Look no further than the Magic Mouse 2, which requires placing it in an awkward upside-down position and that you completely stop using it in order to charge.

The original Magic Trackpad should've had a port for wired connections. That would've allowed you to avoid having to constantly change batteries, as well as avoid the flaming garbage can that is bluetooth. At least they listened and fixed these issues with Magic Trackpad 2.