If you never examine your life, you never have to tackle the big questions about why you're here and what happens after you collapse on the treadmill. Philosophers, preachers and Oprah have been wrassling with them forever to no avail, so wasting your time searching for meaning just takes you away from chauffeuring your kids around and disappointing your mother-in-law.
If you need meaning immediately, try martinis or animal rescue.