You sound a lot like me.
There are simpleanswers to most things, so simple in fact, that is why they're often overlooked looked. I have personally gone through periods of varying degrees of social activity. My take on it now is to be aware of the ebb and flow and to take advantage of what life is offering us to the fullest. If you are in a situation to be social, enjoy it, learn from it and when you get the chance to be alone basically the same.
A point I have often pondered is how we are never really alone and at the same time when I have felt the most alone it was among many others.
Now the deep issue. As we become more and more aware we see how dim the light in others is. Sometimes, while driving in particular, I look around and see people who though awake are barely conscience. It's not a matter of want/don't want to connect with others it's that there is nothing to connect with. And that is in my opinion why, as we go down this road, we find ourselves becoming "reclusive" as you say. And why I wanted to be a part of this forum; to see if I can find some connection with people whose lights are shining bright.