Why SQL can't infer tables dependencies when dropping multiple tables with constraints?

Greetings,

It's a general SQL question not tied to any specific implementation but more on global concepts.

Let's take a simple example, I have 2 tables:

• User (with FK on Group)
• Group

Why when doing DROP TABLE group, user; the server can't infer tables dependency and reorder table names internally to do a successful drop ?

What is the purpose of making it fail ?

• Because developer are already so laz开发者_StackOverflowy, and they need some dependencies challenges during their time...
• Because no SQL database developer had this idea before...

Or without sarcasm:

• By design... bad design
• For security purpose... but don't see what security breach this 'feature' is helpful for ?
• Or it's simply a misunderstanding of SQL concept from my part

Would love to understand, thanks you !

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In some RDBMSes, like PostgreSQL, you can use the CASCADE keyword to drop dependencies as well.