I don't see Spock having humans in his family as implausible at all. As human as Amanda was, she chose a Vulcan life. When we first meet her character in "Journey to Babel" she's insisting to Kirk "it's a better way than ours."
Of course she raised Spock -- and Michael -- to be as Vulcan as possible. Sure, she was a human mother, but she raised them to be in the culture they lived in.
The one question I have about the choice to raise Michael as a Vulcan is that she doesn't have the same biology and physiology. Their touch telepathy, the fact that they have katras that can exist after death, and more. How fair was it to deny her a human life? Especially when we saw the little girl say that she wanted to go back to Earth?
Of course she raised Spock -- and Michael -- to be as Vulcan as possible. Sure, she was a human mother, but she raised them to be in the culture they lived in.
The one question I have about the choice to raise Michael as a Vulcan is that she doesn't have the same biology and physiology. Their touch telepathy, the fact that they have katras that can exist after death, and more. How fair was it to deny her a human life? Especially when we saw the little girl say that she wanted to go back to Earth?