I lived pretty much without one at all until last month. I've gone back to work fulltime, have one in college, one in middle school, one in high school. Plus hubby who doesn't know much about lots of household/finances/etc. because I've run the household for the past 20 years.
We mostly text (free) but it has come in handy-like when I'm stuck at the DMV and my youngest needs to get to soccer.
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