Man, Luke's age is one of those things that feels super straightforward until you actually try to pin it down! In 'A New Hope', he's supposed to be around 19—fresh-faced, whiny about power converters, you know the deal. By 'Return of the Jedi', he's roughly 23, which tracks with the timeline of the original trilogy. But then the sequels throw a curveball: in 'The Last Jedi', he's pushing 53, which makes sense given the 30-year gap after 'Jedi'.
What's wild is how much his age defines his character arc. Teen Luke is all idealism and impatience, while older Luke carries this weight of failure and regret. It's kinda poetic how his age mirrors the franchise's own growing pains—from youthful adventure to middle-aged introspection.