That's a fair rebuttal. Depending on the situation though 'if not this - throw error' can be mitigated. It's one of the reasons why I try to avoid nulls coming

That's a fair rebuttal. Depending on the situation though 'if not this - throw error' can be mitigated. It's one of the reasons why I try to avoid nulls coming into the code, otherwise you have to null check everywhere.