Is it normal to be disengaged from life?

I've always done what others told me; Study hard, go to college, get a job, get married, have kids.

I'm now 29, married, with a good job, and suddenly relealized I don't have any goals of my own. As an adult, I developed a habit of working then going home and just relaxing. I have zero goals and still maintain childish habits like getting stoned and masturbating in my spare time. I never plan events and rarely keep up with friends; it's always just my wife and I; bored together doing nothing.

This can't be normal life, right? I want to be out in the world doing exciting things, yet it's as if I've let life slip me by, I just suddenly came online.