But hormonal birth control products were invented for contraception - and traditionally they've been used for that purpose, and to make girls' and women's cycles more regular, eliminate breaktrhough bleeding, and make periods shorter, less severe and more manageable.

Whereas you specifically recommended using HBC to "avoid having periods" altogether - which is a different use of these medications/products entirely. What's more, you claimed that using HBC "to avoid having periods" is "perfectly fine and healthy."

In fact, using HBC to for the purpose of skipping periods completely has only started to become popularized in recent years, and many people concerned with women's health particularly longterm health have our doubts about the wisdom of using these products in this particular way. Especially over long periods of time.

As for your new claim that hormonal

Birth control however is great for women with PCOS and endometriosis

There's sharply divided opinion and some worrying evidence on those two scores too.

It's important to note that research suggests that oral contraceptives may contribute to severe PCOS symptoms and increase the risk of obesity, type 2 diabetes, heart diseases, and blood clotting.

https://www.healthline.com/health/birth-control/best-birth-control-for-pcos#:~:text=It's important to note that,heart diseases%2C and blood clotting.

The available data demonstrate that combined oral contraceptive use in polycystic ovarian syndrome may worsen insulin sensitivity. However, the effect of this worsening could be modified by the degree of obesity. A decreased incidence sensitivity may not necessarily result from combined oral contraceptive use, particularly in nonobese PCOS women.

Overarchingly, the data concerning metabolic effects are inconsistent and scarce – and there are many unanswered questions. These include the long-term effect of combined oral contraceptives on insulin action, its effect when combined with metformin, the risk of endometrial cancer with long-term use, and conclusive outcomes concerning other metabolic markers such as lipid levels.

https://www.news-medical.net/health/Polycystic-Ovary-Syndrome-and-the-Contraceptive-Pill.aspx

Millions of people take birth control to treat endometriosis — but it doesn’t work

https://www.statnews.com/2023/04/04/birth-control-for-endometriosis-does-it-work/

Although oral contraceptive pills (OCPs) are commonly used to treat endometriosis (i.e., treat the symptoms rather than the disease) there is mixed evidence regarding if prior use of OCPs actually influences the development of endometriosis. Therefore, researchers sought to determine whether prior use OCPs increases or decreases the incidence of endometriosis among a cohort of young women (Tu, Du, Goldstein, Beaumont, Zhou, and Brown 2014).

They discovered that the risk of being diagnosed with endometriosis was 2.4 times higher among women with greater or equal to 5 years of OCPs use versus the never users of OCPs.

The authors concluded that the prior use of OCPs did not provide a protective effect for developing endometriosis but rather found a significant association with prior use but not among parous women... They also mentioned that some of the increased rate of endometriosis might be due to younger women being treated in their early years with OCPs with symptoms like menstrual pain and not for contraceptive purposes.

https://www.factsaboutfertility.org/prior-contraceptive-use-increases-risk-of-endometriosis-among-women-without-children/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7048681/

Cochrane review, the "gold standard" in evidence-based health care:

The combined oral contraceptive pill (COCP) is widely used to treat pain occurring as a result of endometriosis, although the evidence for its efficacy is limited.

there is insufficient evidence to make a judgement on the effectiveness of the COCP compared with placebo and the findings cannot be generalised.

https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD001019.pub3/full

Since it's obvious you're really aren't well informed about the differences of opinion, lack of evidence base, and good reason for caution and concern about the use of Big Pharma hormonal birth control products for the additional reasons you've recommended, I beg of you to please think twice before making sweeping statements alleging that hormonal birth products are "great" and "perfectly healthy" for a wide variety of uses other than contraception - such as avoiding having periods altogether, managing PCOS and mitigating endometriosis. Too many girls and women have already suffered enormous harm due to Big Pharma products being uncritically championed and hormone drugs in particular being used in off-label ways to alter - some would say mess with - female biology.