I have parts of code that are extremely messy, but I don't spend time on refactoring, because once it works it doesn't need any changes... The moment it starts

I have parts of code that are extremely messy, but I don't spend time on refactoring, because once it works it doesn't need any changes... The moment it starts requiring frequent updates I'll take the time to sit down and do a proper revision or rewrite. I do tend to be very careful with my API interface FWIW...