I recently came along this post [0], which pretty much killed PGP for me. I certainly cannot follow all technical detail in the post, but I do see that cryptography has moved on and now offers e.g. forward secrecy.
I should add that some of the risks mentioned in that post can be mitigated by proper user behavior (use a sufficient key length, limit the lifetime of your key). But then PGP is sufficiently complex and error prone (in using it and apparently in its technical complexity), that I don’t believe that it scales to everyone and their grandma using it.