It seems everybody is responding to your question literally, i.e., the specific benefits/drawbacks of OO.
You should learn OO, but not because OO has any specific magic that you need.
The more general form is:
- Q: "Should I learn (OO, FP, concurrent, logic-based, event-driven, ...) programming?"
- A: "Yes, learning a new paradigm is always useful, even if you don't use it directly every day."
