I remember black and white television, and CRT TV screens which shrunk and faded to little dots when shut off. I remember having one telephone in the house. I remember not having a computer in the house, then getting one (Sinclair ZX81). I too remember life before ATMs.
In all these cases, I was a kid - these memories are all from maybe the age of 3-4 through early teens. I never navigated adult life without understanding computers, although early adult life was without cell phone, without internet access, without email, etc.
What I do remember is watching people adjust to these things. They were a novelty, and in many cases, became expected/required for 'modern life'. I was an early adopter, so even watching people my own age was interesting because I could see people struggle with some tech or even concepts, and hearing peoples' descriptions of technology changes has been interesting (often based on rumor or just wrong).
re: being 'away' from home - in elementary school, we had a multi-week project to "plan a trip" - learning about maps, travel distance, budgeting for hotels, food, etc. We had to write away to AAA for maps and info, then plan out where we'd drive, where gas stations were, etc. That was a class project. Today, you literally get in a car and talk to a device (or the car) and say "give me directions to ...." some place halfway across the country, and you'll get accurate turn by turn directions, with live traffic updates, and you can find food/gas/shelter all while driving. Insane to think of those changes, but it's just 'normal' to my younger family.