You don't care for increased promiscuity - and increased from what. The pill has been around 50 years. I don't really give "the inventers" much credibility. Why should I? Are they some respected purveyors of some form of morality?
And you are full of sht with the comment that contraceptives are "failure-prone". Bullsht. ABSTINENCE is failure prone.
https://youngwomenshealth.org/2009/11/.../success-and-failure-rates-of-contraceptives...
Jan 20, 2017 - Estrogen/Progestin Hormonal Injections (not currently available in the US). Out of 100 Women Using Estrogen/Progestin Injections: Typical Use: 6 or Less Women Become Pregnant, icon representing 1 pregnant woman. Perfect Use: 1 or Fewer Women Become Pregnant, icon representing 1 pregnant ...
6% listed there.
"ver three million women in the U.S. each year experience an unplanned pregnancy, but this is not, however, usually due to failure to attempt contraception. About 90 percent of sexually active women use some form of contraception. The 10 percent of women who do not use contraception account for approximately half of unplanned pregnancies, but the other half occur in women who were attempting to use some form of birth control.