Dunno about that, for what I've heard in the US they just leave your package at the front door if you aren't home. As far as jobs go, are you also against street lights that aren't lit by hand?
Anyway, urban delivery by bike is nothing new, about 90% of the urban mail here is delivered by bike, either pedal or moped.
Mercedes has an interesting vision for their future deliveries:
https://youtu.be/ve63xdzc3hg