My biggest regret: not having learned the piano as a child.
My natural laziness, my bad habits ... and my good ear guided me towards the arrangers.
Another big advantage tu use arrangers: independence! knowing, learning a song, choosing the sounds, the rendering depends only on me and I am always in tune with me, punctual, available, in a good mood, ...).
I do not know how to read a score, I am not a jazzman, but what I manage to produce satisfies me, satisfies other people ... and that is enough for me (apart from the regret for the lack of theory and of no lessons).