Wow, PE, that's a terrific story. Kudos to you!
I'm making a pretty big career switch, but didn't actually get much push-back from anyone.
Actually, that's not entirely true... my parents took some time to get used to the idea. My folks have a routine. Whenever I call home, they each grab an extension so we can all talk at the same time. This is what happened when I told them about my B-school plans.
-----------
terry12: Hi Mom and Dad. (Small talk) So, I've made a decision about my career.
Mom: That's great. Are you going to take the attending position at (Med School X)?
Dad: No, I think he liked (Med School Y) more. Son, which one are you going with?
terry12: Neither. After a lot of consideration, I've decided to leave medicine and go to business school.
Mom/Dad: (Silence)
terry12: Umm... I've really given this a lot of thought, and I'm pretty excited.
Mom/Dad: (More silence)
terry12: Well, do you have anything to say?
Mom/Dad: (Mumbling, in a combination of Hindi- which I kinda understand- and their local dialect, which I don't understand at all. I do know that the equivalents of stupid and idiot were bandied about.)
terry12: Hello?
Mom/Dad: (Even more silence)
-----------------
And that's the way it went for quite a while. Thankfully my brother had made a roughly equivalent career switch a few years ago... so my parents eventually came around. And my friends and girlfriend have all been mightily supportive