First post, but this is something I've been thinking about lately.

Some of the pokemon types are rather obvious in their nature: Steel is a primarily defensive pokemon type, while Fighting is a primarily offensive one. Mechanically that means you pick a pokemon with the Fighting type if you want to deal damage and you pick the Steel type if you want to take more hits. At least that's the theory: the competitive metas seem to be somewhat different.

Rock for example: Solid defensive type in theory but a lot of the pro-use of the type comes from the wanting a STAB-boost on rock-type attacks, rather then expecting them to last for long. So as a quick discussion point: how would you all define which types are primarily offensive vs. defensive; and what factors do you use to define which side it is? (Third part: are any of the typings truly balanced in regards for offense vs. defense?)

Just wondering what you guys's thought process here was.