Yeah, I don't think that's because you're a tech person. To most parents, their children may as well be tech experts because their bar for that is simply "they know more about computers than I do." I'm sure most people could probably convince their parents to buy a Macbook, or any other brand of computer, for even arbitrary reasons.

I may be wrong, but I'm highly skeptical that your parents had to be convinced to be a Macbook on the merits of it's technical prowess in relation to other competition. They probably just respect your opinion on technology regardless of what it is.

Based on data or anecdotes?