I'd want to be there for the delivery people, too. I try to meet the Amazon delivery driver in the driveway whenever they bring something; it just seems polite, and then they don't need to puzzle over which door to leave the package at.
At work, we have a postman pick up the outgoing packages every day; sometimes there's four or five heavy sacks. And sometimes the postman is this petite Chinese woman who is 4'10" and weighs maybe 95 lbs. I used to help her carry the bags out to the truck but she started to get offended. "You think I not able to lift this?" So now I just leave her to it, but it still makes me uncomfortable!
RE: When You Don't Want to Be Served: Work, Consent, and the Tragedy of Existence