Ardberg.
there's a genetic foot structure variation( too common to be a deformity) called "Morton's foot" which often suffers from Plantar fascitis. It isn't inevitable though. I have Morton's feet, but only ever had the plantar once, years ago.
Well fitting shoes help. Preferably ones that fasten on. Slip-ons tend to become slip-offs, which aggravate it.
Hana
Ps I do get ingrowing toenails from the Morton's feet shape.