Suki' refers especially to the way someone devotes to a certain accomplishment while not making it as his of her profession, and has lead to such present day colloquial expressions such as 'You're a suki, too' (You really like that thing) and 'Monozuki' (whimsical person).
専門業とはせずに何らかの芸事に打ち込む様を、特に「すき」と称しているのであり、現代の俗語としては「あんたもすきね」「ものずき」などに通じる。