This is very interesting and I have the same felling. I think it is due to expansion of smartphones and mobile internet around us. Before smartphones everyone typed with their keyboard on the table and you were sure, that the person who is connected have time to answer. Today you are basically reachable everywhere and when you don't respond immediately the other side of conversation think what could go wrong. It was not used to be like that before. It was more letter oriented conversation where you had time to write response properly and check your answer or modify it. Today on smartphone there is no time, you have to write answer in few seconds even when you walk or you are in hurry. You can not easily disconnect, because now by default they see that you received message and that you read it. That's probably the biggest difference between now and then.
The quality takes time and to respond 10 conversation at once is really exhausting. It's not anymore about joy of internet, what I feel is there is too much of it. Everyone is instantly connected and about 40% of new generation is basically addicted to smartphones and to internet, that's totally different feeling than before when you do it out of curiosity. The old generation recognize it and probably try to limit their time online, that's the reason why forums and blogs are not maintained today's, it takes time and effort to produce something valuable and this days not many people have even time to read it...
The quality takes time and to respond 10 conversation at once is really exhausting. It's not anymore about joy of internet, what I feel is there is too much of it. Everyone is instantly connected and about 40% of new generation is basically addicted to smartphones and to internet, that's totally different feeling than before when you do it out of curiosity. The old generation recognize it and probably try to limit their time online, that's the reason why forums and blogs are not maintained today's, it takes time and effort to produce something valuable and this days not many people have even time to read it...