Imo i can see most of them having kids
- Luffy: while its difficult to imagine him in love and shit i feel like hes eventually gonna have one
- Usopp: definitely giving kaya a baby on spot the next time he and kaya meet. Hopefully he wont leave them like his father...he might tho
- Sanji: is definitely having a daughter and probably 3 of them at that
- Nami: i feel that nami likely won't have kids of her own but can definitely see her adopting kids or maybe even an orphanage
- Chopper: idk but i think itll be funny if he did
- Frobin: W