My sister finds birth interesting & is totally very supportive of my HB plans. A few of my friends have HBed, or considered it, or have other friends who have HBed - and I've talked about it since DS was born 2 years ago, so it's basically a given.

They're all either supportive or quiet because they know I'll slaughter them in a debate.

DH & I don't plan to tell our parents. I made some pro-HB comments after DS was born naturally in a hospital (Labor went so fast, I had the urge to push before we even left the house!) My mom said, "I don't know about that." in a
'Whooaa! Just hold your horses there, that's a little risky' tone of voice.
I said, "Actually, it's safe! One-third of all babies in The Netherlands are born at home!"
She replies, "But still...."
My dad actually laughed at her & made a comment like, "Science be damned, huh?!"

That was the end of the discussion, but I thought it was interesting that my dad, that quickly, realized she was making judgments that ignored science. & strange too, because my Mom is a really logical, rational & intelligent person - so that is not like her.
But then I realized - she's being emotional because this is Grandchildren we're talking about! I understand that she's being emotional when it comes to her grandkids.
Ya know, I probably could convince her of the safety if I put enough effort into it- and I haven't 100% made up my mind that I won't fess up. (I'm only 11 W.)
BUT - what concerns me the most is if I transfer. Whether or not she'll come out & say it, she may imply, "THANK GOD YOU TRANSFERRED! Oh what would have happened if you'd stayed home?!" [I can't believe you even tried to stay home in the first place!] Baby could have died!

Uh, yeah, I don't need that. Transferring has to be upsetting enough in the first place. I just don't need to feel like they are proven "right" and I"m proven "wrong" & therefore it was silly of me to even have tried to birth at home in the first place. I just don't need that aggravation & stress & headache & upset. I just don't need it.
MIL on the other hand might be convinced of the safety issue. She's not too into reading, but if I threw a bunch of stats at her, she could be swayed. However, she can be a bit of a drama queen and I can almost guarantee she would actually say out loud, "THANK GOD YOU TRANSFERRED! Oh what would have happened if you'd stayed home?!" She wouldn't say it to be spiteful, hurtful, or rub our noses in the fact that we were wrong - she'd just be
thinking it so she'd spit it out.
Again, I just don't need that weighing on me, so I'd rather keep it quiet.