Nothing's perfect, but I do not wish back the alternatives we had (Experts Exchange, Quora, a myriad of forums where the first response was - did you use the search function, endless discussions that don't answer the original question, and so on).

It saved me so much time as a developer who just wants to get no-nonsense answers to my questions. The platform could not work without good moderation, or the site would drown in duplicates and low-quality content.