The phrase "abiding interest" means having a long-lasting or enduring interest in something. It implies a strong and ongoing fascination or passion for a particular subject or activity. Full definition
She has a deep and abiding interest in the personal and cultural expression of memory; it is at the core of her work. (mcad.edu)
The role of the written word in / as art is of abiding interest to me. (themodern.org)
Nicole J. Caruth is a curator, writer, and creative organizer with abiding interests in socially - engaged art and community wellness. (nicolecaruth.com)