Excel: This spreadsheet contains macros. Macros can contain viruses. I'm going to disable, delete and destroy them, okay?
Me: No, it's not okay. Open up the file, macros and all, please.
Excel: Macros can contain potentially harmful viruses. You shouldn't open files with macros in unless you're completely sure that they are safe and virus-free.
Me: They are. Shut up about macros and just open the file.
Excel: So, have you run a virus-scan and got some professional to double-check that there are no viruses lurking in these macros of yours?
Me: No, of course I haven't. Nobody does that. Just open the file.
Excel: You mean open it with the macros disabled, right?
Me: Look, I wrote these macros myself, the file has never been anywhere other than my laptop, there's no way anyone could have ever infiltrated my visual basic workbook with viruses. The file doesn't work without the macros, so why in the name of flip would I want to disable them?
Excel: I'm really not sure this is a good idea. Let's just forget about this workbook, and play with something else, shall we?
I mean, seriously. I've been writing and using macros for many, many years, at home and at work (mainly just for the sake of it because very few people can do them, and everyone thinks you're some kind of magician if you know how, but sometimes because they're really useful things) and I've never had a single problem with viruses, nor met or heard of anybody who has. And yet every new version of Excel forces you to select ever more 'non-recommended' macro security options, special file types, hidden toolbars and so on, just to use a tiny little harmless macro! Stupid Microsoft.