Here's why:
* Latias is a legendary Pokémon: Legendary Pokémon are designed to be rare and unique encounters. You're meant to catch only one per game.
* Storyline: Latias's appearance in the game is tied to the main storyline and its role in the plot. Catching more than one would disrupt the narrative.
However, there are ways to get another Latias:
* Trading: You can trade with another player who has a Latias. This is the most common way to obtain multiple legendary Pokémon.
* Events: Occasionally, Nintendo will host events where players can obtain specific Pokémon, including legendaries. These events are often temporary.
Let me know if you have any other questions about Pokémon Sapphire!