[klibertp]

I don't like OOP very much myself, but it doesn't have to result in "more code" (depends on a language support for concepts), doesn't have to lead to "over-complicating problems" (depends on language support and design skills) and it doesn't necessarily make your application hard to understand and debug (depends on the language, tooling and domain).

As with every tool you need to know how and when to use it, but it can be quite effective if done right.