Older than what? I'm 49, and looking back on my lonely life it seems pretty empty and meaningless. I am thinking that if this is what I am stuck with, maybe there is some way to make it meaningful, which is what I was hoping the book would do.
Old enough to have an established opinion on the topic I guess. I'm 32 and feel pretty similarly to you. My isolated life often feels pretty empty to me, but I often feel that if I could just change the way I think about isolation I might not feel so bad about it. There are definitely a lot of benefits to it, and a lot of my heroes lived very isolated lives, so maybe it's not so bad.
I've read the "Quiet" book, and yea it's pretty good. If you're looking to find some positives about being an introvert, then this book is full of them. The author gave a TED talk too, that you might find helpful -
https://www.youtube.com/watch?v=c0KYU2j0TM4
The writing style puts me off. It's punchy. It seems to me that if you have something interesting to say, you just say it. If your writing is punchy, on the other hand, you are trying to hide the fact that you don't have much to say.
I've often thought that too! I always see it in musicians and throughout all the arts in fact. Whenever the content isn't very good, the performers always seem to ramp up the appearance side of their act, as though to distract people from their lack of having anything to say. So you may be right about that book!