I guess for the same reason we need annual car inspections.

Probably something along the lines of : people cant be trusted to keep an eye on their vehicle’s condition and we don’t want any more pollution and accidents than there already is.

I think it also helps keep vehicles healthy for longer, even though that effect is negated by the fact that we’re getting pushed to replace perfectly functional cars with electric ones…

Get out of here with your non-manichean views!