Interesting, I've been learning and doing almost everything with a functional or procedural style, but I've felt kind of guilty I don't understand OOP patterns

Interesting, I've been learning and doing almost everything with a functional or procedural style, but I've felt kind of guilty I don't understand OOP patterns enough, or don't know when I would want to use them. So I've been learning Smalltalk/Pharo and reading Smalltalk, Objects, and Design [1] because people say that's what OOP was really supposed to be. It's been interesting and enlightening in some ways, but I still feel like I'd rather do most things without OOP. Do you think it's still helpful or worth it to dig into all this for someone now? [1]: https://www.amazon.com/Smalltalk-Objects-Design-Chamond-Liu/dp/1583484906 https://www.amazon.com/Smalltalk-Objects-Design-Chamond-Liu/...