Actually, it makes perfect sense. He wanted children. Period. It appears he was not going to get them the conventional "love and marriage, then comes the baby carriage" way, for whatever reason. I'm not going to open up that can of worms here. But he certainly wasn't going to broadcast his plan of conception to the public. (And I cannot blame him.) I think (at least with the first two) he wanted it to be as indecipherable and unclear as possible.
Old fashioned manner of conception or something else?......After all, they were married.... His bio kids or a donor's? Was Debbie Rowe the bio mom? Was she only a gestational carrier? The fuzzier it gets, the harder it is to figure out and to someone who wanted to keep the issue private, THAT suits his purpose.
For whatever reason, Debbie Rowe agreed to be the "mother" of the 2 oldest. Whether she's the bio mom or gestational mom is up for debate. But SHE is the one he selected. If by chance, she is NOT the bio mom, it makes total sense that he would want a donor who
fits her general profile. That way, there would always be room for speculation that Debbie was the bio mom. Sure, she's a big girl now, but if you've seen pics of her from when she was younger, (and remember, he knew her for a long time) before she put on weight, she was perhaps not a raving beauty, but decent enough looking. Blonde hair, blue eyes. There are a lot of quite pretty, blue eyed blondes who are less than stunning by the time they hit 40.

What other profile would he select? A petite, curly red-headed, brown eyed woman? It is logical that IF he used a donor, he'd pick one that more or less matched the physical markers of Debbie Rowe.
When couples use donor "bits," believe it or not, they do not usually go in and look for Adonis or Miss Universe. They often select a donor who matches the wife/husband who cannot "donate".......and we're not all married to 10s. People tend to want a child who is a combo of themselves and their spouse....and if the spouse cannot donate, you pick the closest match to them that you can in many cases. Why would MJ be any different, especially if he wanted to give the impression Debbie Rowe was indeed the bio mom? (
And she well may be.)
As I have said, I think Paris looks like Debbie, although I could be imagining that. And I believe Paris is quite pretty. So if Debbie Rowe is her bio mom, she certainly managed to produce a lovely child.