I tend to discourage people from calling me 'Sir Ian,' because I don't like being separated out from the rest of the population. Of course, it can be useful if you're writing an official letter, like trying to get a visa or something passed through Parliament. They're impressed by these things.
People write about getting sick, they write about tummy trouble, they write about having to wait for a bus. They write about waiting. They write three pages about how long it took them to get a visa. I'm not interested in the boring parts. Everyone has tummy trouble. Everyone waits in line. I don't want to hear about it.