I don’t think things are THAT different, other than computers being in people’s homes now. I think that you have different eyes, now that you’re a parent.
I recall seeing Playboy and Penthouse at the corner store (the covers were not “appropriate” as you say, and were covered by cardboard – sometimes) growing up in the 60s.
Certain movie houses were XXX. Topless bars were advertised in the newspaper and on billboards. Lots of things were advertised on billboards. Cigarettes, booze, sex…
Speaking of advertising, remember the sexually charged airline advertising – “We really move our tails for you?” – and the innuendo with the models/stewardesses?
Things are not so different as any other time. Watch what your kids watch, be engaged with them, discuss expectations and instill values in them.





