Re-using needles for loading??

[Kale]

A buddy of mine says that he re-uses needles when he loads the syringe with the liquid from the vial. He does still use brand new sterile needles for injecting, however.

But i'm wondering... provided that you keep the needle in a sterile environment and wipe it down with alcohol before use, is re-using needles for loading the syringe every time a safe practice?

Needles are cheap, why risk any kind of infection