How many drivers can Ferrari have? Verstappen, Bottas, Hulkenberg, Grosjean, the ghost of Jules Bianchi... come now. We know how this will end for Grosjean and it's not like Ferrari have pulled the rug out of many feet in the past. Amazingly though they keep giving the rug to Kimi.
When you are torn between choices, always pick the one that will make the best story. ¯\_(ツ)_/¯