I was in the joint with a guy that lost his forefinger to a chainsaw. He said that he barely noticed the difference, once he was healed. The main thing was that objects sometimes fit differently in his hand. They balanced differently. Think of it as holding an axe handle with your pointer finger still open. The handle will shift/rotate slightly forward in your hand.
Personally, it's not something I would adapt to easily. I'm an extremely hand oriented person. I suspect I would feel less of a man, if I were to lose a finger. Especially a fore finger. Losing that one on my right hand would effectively end my ability to draw. I've already got carpal tunnel in my right hand and it's taken me more than a decade to adjust to that.