My parents, in their mid 20's came to the U.S. from Europe for better opportunities for themselves and us kids. They left all of their family and friends behind.
Some nice JW' ladies came to call on my lonely mother. They offered her friendship, family and everlasting life. The door to all of the opportunities in terms of higher education, jobs, holidays, sports, life experiences for themselves and us kids, was slammed shut from that point on.
My Father never got baptized but studied for years and died from not taking a blood transfusion during a surgery. Everything he knew about the topic of blood transfusion, was learned from JW's during his Bible study with them. A short time after he died (horribly) the JW's decided that blood fractions were acceptable. In his case, the use of blood fractions would have surely saved him. The decision to allow the use of blood fractions because they weren't considered blood, would have tipped him off that these ordinary men, don't know what they are talking about and that maybe he should take medical direction from highly trained medical professionals instead.