My career is spent helping sick people. Someone always needs something from me at work. Outside that, people come to me for many other things because I'm reliable, educated, wise, and have a reputation for valuing integrity and good character.
As a result, I highly value my alone time. I used to be alone a lot when I was a web developer. Things flipped. My needs changed.
Age isn't the key issue for me. Self-awareness is. Time has given me the experience to develop self-awareness, but that's all age has given me.
Needs change sometimes.