I have had the responsibility as landlord for several guest houses particularly during ski season. I also look in the lost and found containers at my swimming pool gym. These containers are filled up weekly with all the artifacts left behind by users of the dressing rooms.
At the end of every ski season the house that I was responsible for had to be cleaned. More than two dozen people had used the house during the season. What I found every year continues to amaze me. There were always many towels, countless bottles and tubes associated with makeup and deodorants. Every possible form of clothing was left behind including shoes. Every possible form of ski equipment was left there from parkas to boots and ski poles.
The same seems to be true with what is left behind every week in the dressing rooms at my swimming pool. Backpacks, shoes, glasses and the list goes on and on.
I know that people are careless because I have lived with many people. But I am constantly surprised by how much people leave in their wake as they travel through life. It is certainly wonderful that they almost have to adopt simple living inadvertently. But inadvertent simple living I don't think is their objective.