Well, before SO, you had sites like 'Expert Sex Change' (expertsexchange.com) which would purport to answer your question, but gray/blur out the actual text. They then required payment to expose the answers, which often turned out to be non-existent.

On the other hand, I've had a lot of success with SO, both asking and answering, and while there are occasions where I find questions closed as duplicates or off-topic, they are pretty rare. I frequent the Java, Docker, Kubernetes, jclouds and similar categories, and they are generally very good.

It may be down to the choice of topic? Perhaps PHP and .NET have more first-time users, and a lower quality of questions? I don't know; although since the SO data is all freely available [1] it might make a nice research project to discover [2] what causes these questions to be closed!

[1] https://archive.org/details/stackexchange [2] https://data.stackexchange.com/stackoverflow/query/540597/ov...