I don’t think a civilized society requires a person to accept an offer of accommodation, only to be polite in either accepting or declining.
For example, I was carrying a load of camping gear to my car a couple of weeks ago, and two men offered to help. “No, thanks,” I said, “I’ve got it.” “I was just trying to be helpful!” said one, in an affronted tone. “That was nice of you,” I replied, “but I’m fine, thanks.”
They were supervising Scouts, while I was on a break. It was much more appropriate for them to stay in their roles, although the offer was kind. On other occasions, I was happy to accept assistance from both adults and youth in putting away the archery targets.
I try to practice the “Golden Rule” and treat others as I’d like to be treated...Or would wish strangers to treat my mother, wife or daughter in similar circumstance...
How they respond is on them, and just let it go...Life’s too short to let rudeness get to you...Your approach is a good one...
“They were supervising Scouts, while I was on a break. It was much more appropriate for them to stay in their roles, although the offer was kind.”
While I agree with you on the polite acceptance or declining of offered help I say you missed a golden opportunity with those supervising the Scouts.
Had you accepted their help and politely thanked them they would have had a great example to show their young wards.
Had I been supervising the Scouts I would have had several politely help you with your gear and explained to them that is how things are done in a polite society.
At the same time I can understand your point. Even a small number of young’uns on a camping trip need near constant supervision.