Pretty sure people had far less sex, before the invention of TV and internet
Pretty sure Gay sex, was less as the print media/ TV media and internet have been a catalyst in the sexual revolution / evolution.
Imagine pre internet , no Craigslist, No infinite supply of porn; and as this would be pre 1930, gay / lesbian activities would have been deeply closeted ; and illegal punishable by imprisonment
As far as Hetero sex, again I would wager less than now. Pre 1930, most of America was still agrarian based , up at 6AM and work till sun down. half a day on Saturday. Farmers had large families, to help with the farm work, but that implies, the wife gets pregnant, carries a child for 9 months, with a few months / years break before the next child. It was not out of the ordinary for a wife to assist with farm work, in addition to raising children; and running a home ( Tired wife == no sex )
Men / Women lived a lot shorter lives , pre 1930 , A person in good health with access to modern healthcare lived 55 - 60 years of age . Those who lived in poverty / miners / rural - farmers many barely lived to 50. By age 45, you were probably assisting your children to raise and care for their children, as children often, settled close to home / same home town . The 50+ year old sex goddess, we see everyday now, ( LPSG has many ) were very few and far between
Imagine in 1930 or earlier, no unions, so you worked 10- 12 hours a day . Sex was a dirty word ; and this site would not exist; and all of its members would be in some government database as subversive ( at least in America )