Also prove that you have researched completely before you make a leap. Your right it is a lot of money to most people. The year before we got my bike we bought a new woodstove. I spent months pouring over catalogs and internet info before buying. The wife had reached a point were she didn't want to know any more about it, just buy the one you want. It didn't take her long to figure out that I would do the same thing while shopping for a bike. So once we got a rough idea how much I could spend I was on my own. Also take her to a HD dealer even if you have no desire for 1. Those crazy prices and 8 year financing will make triumph look like the more fiscally responsible choice that it is.
