A short anecdote:
Once my person left home/household under the gems as a wanderer, a beggar with not any society as refuge, after a day walk, burned feets (it's hard to cross the area around a city where just cars are used to move along till first shadow can be found), he come to a monastery.
It was "accidentally" one of the best "teaching young Bhikkhus monasteries".
The Ven. Abbot just cross-questioned his disciples as my person approached, willing to ask to spend some days to look after the feets and to repair and prepare the robes since they had been in bad conditions.
After having got a place to sit, some water to clean the feets, water, he continued to cross-question his well-versed disciples: "What do you think. Is it samma ditthi or miccha ditthi if one desires to become a Buddha?" They discussed, could not really agree, argued... Then he turned to my person. The answer was clear.
After explaining, after approve, the young monks, understanding it and no more doubt, they asked: "How is it, how can it be possible, that this person, having not nearly learned only a little like use, was able to answer the question (with certain amount of issa)."
He just said: "That's the different between practicing and learning."
Since one has strong desire, attachments toward home, toward world, a Bodhisatta is not able to leave home, having not left home, how could he ever see beyond, how could he ever gain right view and develop right view before he possible meets his last birth, having figured out that no refuge can be found in the many homes, worlds, what ever far or near.
This is why a good father would not advice his children to walk the same long burdenful path, let them make the same mistakes, but show them the direct way to that what he has archived. No Buddha, no Arahat, no good father would ever advice people to walk only a day an insecure and maybe wrong way, would never advice their children to do all to become a father one day, to walk following his many failings and hardships.
It's simply 'mana' or 'maya' (illusion following Mahayanas use of this world) that one desires to become this or that for this or that sake.