Yes, the whole "100% selflessness" mentality is very much a thing, even though the good-deed is frequently a two-way street when you drill down into it.
A couple of years back, a young lady posted in my local FB group that she had just got a flat and did anyone have any furniture she could buy. I immediately messaged her and asked her if she would like a washing machine. She said yes, and "how much"? I said it was free, and if she could collect it then that would be wonderful, but I could deliver it at a push. She was really reluctant to take it for free, but I was insistent.
And why was I? Well, I'd taken it from a friend who didn't want need it when she moved house. It was a perfectly good machine, albeit only a 5KG load, so I stuck it in the garage until my washing machine conked out. When that day came, i installed it in my house, and soon realised that working or not, it was a rubbish washing machine. I bought a new one.
Said washing machine went back into the garage. I eventually gave it to some friends when theirs broke, only one day her husband brought it back, just like that, because they too had gone-in for a better larger capacity washing machine that actually did a proper wash. So back into my garage it went, because despite being a bit crap at what it did, it was obviously built like the proverbial brick out-house, as it refused to breakdown and by now was many years old. As such, I couldn't bear to just dump it.
Anyway, I was so relieved when the aforementioned young lady agreed to take it away, and yes, I told her it was small in capacity and the performance was questionable, but she was delighted. As I was I to see the back of it, though I live in fear of the day she messages me to ask if I'd like it back. I may deleted my FB account & move house before then, I think.