I just made a complete balls of a Ten Commandments brass loco inspection kit bought at the Manchester show today. I have learned a valuable lesson though - life is too short for fiddly brass kits.
Better not to just launch in to a brass kit until you'be given it a bit of prior thought. Slower process than plastic and more tools required but worth the effort.
Please do not condemn a whole section of the model market on account of your own lack of patience. To many, etched kits have transformed modelling and made people 'up' their modelling skills and that has to be a good thing.