For a neurotypical adult child, by the time they hit their mid-20's, your role should be more advisory/peer-to-peer. I graduated college at 21 and moved 200 miles away from my parents--they didn't help me with anything, except Dad would still change my oil for me (probably still would, if he were alive!). By 23, I had a career, a husband, and a house--little to no parental involvement beyond stuff like, "Can I have your meatball recipe?" kinds of things.
For my own kids, DD27 has been fiercely independent from the jump. She lives 800 miles away with her long-term boyfriend. She chose where to get her master's and her field of study, just like she chose her undergrad stuff. She's not getting rich or famous, but she's happy and thriving.
OTOH, DS25 is autistic and has anxiety and depression. The anxiety, by far, is most limiting. He'll probably always have to live adjacent to family. OTOH, he works full-time, goes to school part-time, picks his own classes, and is capable of most life tasks. (He'll drive his car to/from work, but not elsewhere, and still needs me with him for dental appointments, for example).
DD19 is doing great, living on campus. She also has anxiety, but just this week, she got kicked out of therapy (in the nicest way possible--she's managing just fine). She goes to school locally, which turned out to be absolutely the best thing for her--best of both worlds, on campus, but able to drop home any time. For grad school, she'll move away, and I think she'll be ready at that point.
DS16 is another independent one, he can't wait to move out on his own. He's ready. One college he likes is over 500 miles away--we're more concerned about that than he is.
It really depends on the child in front of you. We've tried to give all of them the skills they need, as well as the support and encouragement that they're smart, competent adults.