Wise men speak because they have something to sayn fools because they have to say something. - Plato

I think people like to prescribe their "ways" onto you, perhaps they themselves are doubtful of their own decisions. By trying to get you onto the same boat as them, well, misery seeks company.

End of the day, it's always you who needs to create a livelihood. The others can say all they want, but they don't have to suffer the consequences of your actions, or their advice.