I find that writing unit tests actually increases my programming speed

When to use iterative development? You should use iterative development only on projects that you want to succeed.

One of the things I've been trying to do is look for simpler or rules underpinning good or bad design. I think one of the most valuable rules is avoid duplication. "Once and only once" is the Extreme Programming phrase.

So I hope I’ve made clear that imposing agile methods is a very red flag.

I find that writing unit tests actually increases my programming speed

I can't choose whether someone is offended by my actions. I can choose whether I care.

Never in the annals of software engineering was so much owed by so many to so few lines of code