There is nothing special about 生きがい (ikigai). It's just Japanese for “reason for living”.
There is a wider phenomenon where people attribute deep meaning to mundane Japanese words, such as 改善 (kaizen, improvement), 引きこもり (hikikomori, recluse), or even 看板 (kanban, board). This sounds like a case of exoticism.
There is a wider phenomenon where people attribute deep meaning to mundane Japanese words, such as 改善 (kaizen, improvement), 引きこもり (hikikomori, recluse), or even 看板 (kanban, board). This sounds like a case of exoticism.