I had an idea for an app fresh out of college and wasn't having any luck attracting a technical cofounder. Many of the folks I had been trying to "recruit" to my idea were more keen to help me if I were building it myself, so I started learning to build it myself. The app idea eventually died (it was terrible), but my love of coding stayed.
I'm currently dabbling in OCaml and finishing some side projects in Elm.
Elm! And functional programming in the frontend in general.
Never apologize or feel you have to apologize for what you don't know.