Aren't Genetics Wild?

I recently got a most distressing e-mail from Master Bates:

"Had my first ever Target popcorn today and it came nowhere close to the hype you built up. In fact I threw out a lot of it as it was not good."

At first I thought maybe he just got a bad batch, but then I remembered Target popcorn is popped fresh every 30 minutes, and there have been times when Mrs. Poop has gotten Target popcorn in the morning, and I ate it at 6 pm, and it was still delicious. So that couldn't be it.
Then I considered maybe Master Bates was raised to dislike delicious popcorn. But since we were raised by the same parents, in the same house, the same room even, we must have been exposed to the same things growing up.
So maybe nature in the age old nature vs. nurture debate was the reason Master Bates didn't like Target Popcorn.
So I called Mama Poop and she said she loves Target Popcorn too.

Therefore the only conclusion one can make is: Master Bates is adopted.