Earlier quoted context omitted.
If I'm having a bad day and a stranger asks "how's your day," I don't invent a good day.
Yeah but your day is not something that differs you from the most people, something that many people don't accept, something that you probably have been humiliated for. You're not a “faggot” in high school because you had a bad day. It's something you chose to accept and tell your friends and parents and see some people sneer at you. I think that pretending to have a wife for the sake of smalltalk feels like going in…
Usually when you are making small talk with someone who you will most likely only be in the company of for 5 minutes they are more interested in avoiding awkward silence than actually finding out details about your life.
If you don't bring up a wife they will just as easily assume that you are single or divorced as much as gay.
Besides , people who work in a public facing role like a cab driver or florist will most likely meet gay people all the time and won't find it the slightest bit novel.