Thanks rbranson, this comment was very helpful. I also think that the logical fallacy of some of these arguments is that they´re absolutist - it´s better to follow your advice because it´s a very logical progression to start with a SQL database and then move into different things as you grow. Life is a progression and I think your quote about premature optimization is spot on - it IS the root of all evil because it´s absolutist and too rigid to fit the curve of everything that life (and tech, and work) throws at you!