Comfort and Convenience
Comfort preferences vary because bodies and habits do. Seating position, cabin temperature and how much air is moving all read differently to a tall driver, a shorter passenger, or someone who simply prefers things warmer.
Safety and Driver Assistance
Setting up before moving off is worth the minute it takes. Mirrors, seat, lights and climate are all easier to adjust while stationary, and a driver who already knows where each control sits is not hunting for it later.
Multimedia and Connectivity
Keeping a phone charged is its own concern, separate from playing music or taking calls. On longer days the battery matters most, since navigation drains it quickly and an empty phone is useless at the destination.