My flatmate at the time ended up marrying a couchsurfer we'd hosted, after reconnecting many years later.
We all got sulky and huffy when they started charging and stopped engaging, but the sad thing is we just got too busy. Couchsurfing was like hosting a party constantly, and as work picked up I found it harder to engage.
Still seems to be a community there. I found myself in Split a while ago and stumbled upon a meetup, had a great evening unexpectedly.
In 2009, I was living somewhere I couldn’t host, but my primary social group for that year was other local couchsurfers — we used to meet up twice a week. One of them got married to one of my friends. Others I kept in touch with for many years.
I haven’t been part of it in a long time, but I haven’t many fond memories of the couchsurfing community. Like you, I didn’t have any bad experiences.
I tended to go out my way to try and accept people to stay who were either very new the the platform (which usually made it hard to find a place as karma was low) or were very different to my normal group of friends. Which definitely made for some interesting experiences and conversations. Price of entry was usually a list of their favourite albums. I discovered so much great music out of it.
Finally gave it all up when I moved back to Australia and wasn't in a position to host anymore. So many fond memories tho. I miss it.