Depends on context. Yahoo Answers was so bad it was a form of entertainment (unintentionally), especially with people curating the funny stuff so you never had to even set foot there.

Quora on the other hand just pays people to participate so you end up with people who don’t even have any questions they need to ask making up garbage, then people giving copy/pasted or even completely wrong answers to boost their reputation. The site also always pesters you to log in. It’s not even useful as a source of a good laugh.