>In theory this sounds great but in reality every major application, game, operating system and even website is written in an OOP style. Why is that? People sho

>In theory this sounds great but in reality every major application, game, operating system and even website is written in an OOP style. Why is that? People should first answer that question. Ok, try this on for size: OOP in general has one characteristic that makes it fantastic for large-team development, and that's extending over replacing. OOP makes it easy to never remove or change any existing code, and also "easy" to make changes or fixes by only adding more code. I wouldn't call it a good thing, but it does enable enormous numbers of people to all work on a codebase productively at the same time. I think this, more than anything else, is the power of OOP. > And if OOP is so horrible why do so many people write OOP style PHP and javascript where they really don't have to? Numbers. OOP supports big teams, so there are lots of OOP programmers in the wild. I genuinely think Javascript is sucking up to the Java developers of the world, and PHP is genuinely better for adopting OOP bits and pieces, but I'm not entirely sure why OOP devs and Java devs in particular seem to be immune to the industry mantra of "stay current and learn new things".