Most of my exposure to computers happened in the late 90's. I was in high school then, so probably around 16 years old or so. We had tinkered with a DOS computer & Atari before that, but we got a Win98 PC & a dial-up connection and that got us started. Really wanted to play Half-Life, learned how to upgrade a video card & RAM, and kind of went from there. So really it's probably been about 17 years of solid access to computers.
I got an iPhone as soon as it came out & have had one ever since, so about 9 years for mobile (plus a few oddball flip phones & a Dell Axim before that). Can't imagine life without one...I'd be totally crippled for communications (voice, SMS, email, social media), GPS, calendar & appointments & reminders, banking, entertainment (games, news, podcasts), authentication for secure access to different 2FA websites, and most of all, my 24/7 camera.
My 4-year-old has no idea what physical media is. Netflix & Spotify is all he knows - endless movies to watch & music to dance to. He got his first tablet a year or two ago (Android tablet with a kid's GUI & big rubber bumper case) and uses a ton of learning games, interactive story books, education videos, etc. Just upgraded him to a newer, faster 6" Kindle Fire for $79 for Christmas, which lets him play Minecraft (sooooo much cheaper than buying Legos!).
It's a crazy world. I watched a bit of the show "Revolution", where the power went out one day worldwide & they whole planet reverted back to like the 1800's style of living...horses, muskets, farming, etc. Scary to think about how much we rely on technology. Online dating is still a new & weird idea for me, but over half my friends (early 30's) have met their spouses on dating apps like eHarmony. I can't remember the last time I had to go to the bank or stop & ask somebody for directions. I even order pizza online these days! Probably at least 80% of what I buy is from Amazon, which has started to include household items like paper towels & cans of tuna.
It is interesting to see how people live without technology. I have family all over the place, and when I visit family or friends who live in the Deep South, a lot of them are definitely not caught up on the times...they still have Nokia cell phones, beige computers, tube TV sets, etc. I helped a roommate of an older friend change her lightbulb in her house (probably mid 80's) because she couldn't reach it...it was the only one in the main room of their small shared house, no idea that LED bulbs that basically last forever even existed.
Makes me feel very blessed to have access to the technology that I have...iPhone, Chromebook, Roku, e-Ink Kindle, etc. The amount of clutter in my life has been drastically reduced as well. All of my music is digital now...no records, tapes, or CD's. All of my movies have been digitized...no VHS tapes, DVD or Bluray discs. Although I do have printed photos on my wall, all of my photos are digitized on my computer & backed up online. I have a simple computer station setup in my kitchen with a multi-function printer & shredder for scanning in mail & other documents & shredding the paper copy. The scanner OCR's the resulting PDF & I drop it in my Dropbox for backup & access on my phone, so I don't have any paperwork lying around other than a small lockbox full of originals (Social Security card, birth certificate, etc.). Home entertainment furniture has been replaced with super-thin flatscreen TV's & projectors, no need to go to the movie theater unless it's a big release I want to see like Star Wars.
I learn pretty much everything from Youtube or Google & Wikipedia these days...how to do plumbing, how to fix crap that breaks in my house or on my car, how to cook, everything. The answer to any question I have is a few keystrokes away. My buddy has the Amazon Echo, so all he has to do is...ask. And we take it all for granted because that's just how we roll these days! Craziness.