What is the longest, uninterrupted stretch you've stayed offline (without mobile access either)? How soon did you suffer withdrawal pains? Did you find it liberating?
Back in the days before motels had wi-fi internet and also back in the days before my phone had unlimited data and a decent web browser, I simply remained offline during my week-long vacations. I think the last time I had such a stretch without internet access was in 2003. I didn't think that was liberating, just different. Also, I didn't have as much happening online in those days.
Of course, the real answer to the first part is from birth until around age 18, which is the period of time before I started using the internet, but I don't this is what the question meant.