You may think this 'sad', but living in my own, this forum in particular provides one of my main forms of social interaction. That doesn't mean I'm not busy (sometimes more than others) and need to make value judgements for time spent.
General strategy: answer in brief initially, then provide full commentary later if warranted. Some of my input takes hours to compose, or even days, and while I had that sort of time under previous circumstances I now have to make serious choices where the effort is justified.