Reddit has gotten better recently, as long as you stay off the popular subreddits. Pick your 10 favorite hobbies or interests, and subscribe to those subreddits. It's got to be specific: not programming, but programming in Java; not electronics, but amateur radio; etc. (I will admit I enjoy r/AskReddit, which is where people write short stories in response to a prompt in the form of a loaded question. Ask Metafilter is much less creative, in comparison.)
A lot of people are recommending r/programming. r/programming is why I quit Reddit a few years ago. It's all "computer-related cult wars" rather than actual discussion about programming. Everyone goes through that stage in their programming career, but it's not interesting to read about, and most people eventually grow out of it. Not r/programming.