I'm surprised at how negative the reaction to SO is here! It just takes a while to get the site, which unfortunately doesn't work if you jump right in without lurking. If you ask questions the moment you run into trouble, you kind of project a disrespect for the answerer's time by not trying to solve it yourself first. If you ask as a last resort and list what you've tried, people are waayy nicer, even if your question sucks.
I think the real problem is that people's expectations aren't properly primed going in. The site could do a much better job about that. If you ask only as a last resort, you end up solving most of your problems yourself, and SO is REALLY good at helping you do that, in a way that leaves most other sites in the dust, in my opinion.
We use too many libraries. This may be an actual unpopular opinion though. I find that the more a library tries to do, and the more dependencies it has itself, the more hesitant I am to use it. It just feels like a tower of cards ready to fall at any moment.
I'm not a very trusting person and work alone though so this might just be an emotional decision. But it is nice having a project be composed of code that does just what is needed and nothing else. It makes it easier to fix bugs and especially to maintain the code.
I do use libraries, but only if they're absolutely necessary or if they're very focused and don't try to do a million things. It's not about size but complexity.