here ' s a reason that published missed approaches existthey are known courses for terrain clearance and airspace can be protected around them . Asking ATC for alternate missed instructions all the time will just clog up the frequency , unless you ' ve got something like an engine failure or a very good reason that you need alternate missed approach instructions . Really it is all about context and situation awareness right . If you are down in the eastern US , then yes of course you will likely use the published . But up in northern Canada , it makes no sense to spend time getting set up in a hold when you could just go missed , get back up into radar coverage is that is a factor , might not be available at all and start moving towards somewher usefull . It comes down to being able to make the best plan , communicate it , then execute .