Because there is absolutely no evidence that Pokemon reproduce the way animals do in the real world.
Sure, it takes a male and a female Pokemon to make an egg, and there needs to be some degree of compatibility (in terms of egg group) for breeding. These are features Pokemon breeding has in common with sexual reproduction. But that may as well be where the similarities end.
We're talking about creatures with magical powers, some of whom don't even seem biological in their composition (i.e. composed of rocks, metal, or intangible gas). The list includes a monster with two spoons who has an IQ over 9000 and yet can't learn more than four specific techniques to use in battle, a slug whose surface temperature is hotter than the sun, and a springy pig who will die the moment it stops bouncing. There's no reason to think it probable that the reproduction process of these bizarre things would mirror, to any extent, the way sexual reproduction works.
And also, let's take the Daycare Couple's "we don't know how it got there" seriously for a moment. You think a grown couple who themselves have probably reproduced (being married and all) would have no idea how an egg came to materialize if there wasn't more to the story?
This is why I mentally facepalm every time I see someone expressing surprise at the fact that a tiny cat and a whale can produce an egg. Well, maybe those two things aren't cats and whales, but repositories of magical energy who metamorphose (or have metamorphosed) into drastically different beings in the course of their existence- one of them after being exposed to a magical stone. The rules in that world don't have to be similar to those in this world.
Sure, it takes a male and a female Pokemon to make an egg, and there needs to be some degree of compatibility (in terms of egg group) for breeding. These are features Pokemon breeding has in common with sexual reproduction. But that may as well be where the similarities end.
We're talking about creatures with magical powers, some of whom don't even seem biological in their composition (i.e. composed of rocks, metal, or intangible gas). The list includes a monster with two spoons who has an IQ over 9000 and yet can't learn more than four specific techniques to use in battle, a slug whose surface temperature is hotter than the sun, and a springy pig who will die the moment it stops bouncing. There's no reason to think it probable that the reproduction process of these bizarre things would mirror, to any extent, the way sexual reproduction works.
And also, let's take the Daycare Couple's "we don't know how it got there" seriously for a moment. You think a grown couple who themselves have probably reproduced (being married and all) would have no idea how an egg came to materialize if there wasn't more to the story?
This is why I mentally facepalm every time I see someone expressing surprise at the fact that a tiny cat and a whale can produce an egg. Well, maybe those two things aren't cats and whales, but repositories of magical energy who metamorphose (or have metamorphosed) into drastically different beings in the course of their existence- one of them after being exposed to a magical stone. The rules in that world don't have to be similar to those in this world.