I still didn't learn how to use PGP. I was wondering if it's worth it
Generally, learning to use PGP/GPG is a good thing.
Whether you use it to secure your account on bitcointalk or you start using it for private communication via email, it's definitely worth the comparatively little effort to set it up.
Once you're used to signing all your emails you might notice that it's a pretty convenient way to store private notes (or generally information) online.
As soon as you start verifying other users' emails you'll also note that you'll do trades via email more confidently etc.
The list goes on and on, but no matter what specific use case you might eventually find for yourself:
I doubt that you'll ever regret using strong personal encryption on a daily basis.