I agree with you, when you say its a master of RDBMS. But each extension brings its own baggage. Specialised databases are written for a reason. For majority of

I agree with you, when you say its a master of RDBMS. But each extension brings its own baggage. Specialised databases are written for a reason. For majority of the people the extensions may fit . But its not the best way once you want to optimise.