To use the 'I' prefix for interfaces or not to

Question

That is the question? So how big a sin is it not to use this convention when developing a c# project? This convention is widely used in the .NET class library. However, I am not

Answer 1

I would say that not following this convention would get you down to .NET hell. It's a convention that's almost as important to me as using self in instance methods in Python.