Same tbh, my exactly feeling and response. Also him just sleeping 3 hours a day and being hospitalised. He's a complete workaholic/addict who I suspect has ADHD and maybe Aspergers/Autism, a lot of famous creators in Japan seem to exhibit traits of it imo but Japan itself is a very "autistic/peter pan syndrome country" imo these days. Might be side effects of trauma caused by the nukings and WW2 as I strongly believe Autism can be caused by childhood traumas or at least similar symptoms of it to ofc.
I've worked with a lot of autistic people before at a former charity job and they all had deep childhood traumas without fail like we were all characters written by Oda and my therapist said childhood trauma can lead to Autism and ADHD-like symptoms too at least.
Its ironically bittersweet that this absolutely beautiful, heartfelt and somewhat tragic (especially if you know what happened to Duffy and why she "disappeared for so long") but also given this context and the reason its included in the Jojo Part 6 anime too:
I chose a version without comments as comments on the song WILL have MASSIVE spoilers for Part 6/Stone Ocean of Jojos Bizarre Adventure GUARANTEED. I'm talking complete series changing spoilers that I cannot elaborate on, even crazier than Sabaody to Marineford in One Piece! Its an extremely controversial/divisive part, thats all I can say but I kinda appreciate why it was written like that and why Araki did it. I genuinely cannot say more than that anyway!
But yeah this song really fits for One Piece and Oda too imo, a series all about dreams, grand ambitions and such ofc. But then again by that logic, you could also say these songs fit for OP too ofc!: