Micah Sweet
Level Up & OSR Enthusiast
Challenge accepted. All you are talking about is your preference not to use training.To paraphrase Don Draper... that's what the experience points are for! You're learning in the field. It's not like fighters need to pay for a license to hit some guy twice in a round.
As for worldbuilding, I guarantee that the DM 's who like this wouldn't let a PC take a week off and rake in thousands of gold risk free training lower level NPC's.