I've learned over the years that there is no point in discussing this topic, although the abundance of misconceptions does get me fired up from time to time. Anyone who still argues to one side or the other has clearly forgotten that the entire industry is a developing technology still in its infancy. And this also applies to the other war (Intel vs AMD).
Use what you want, but don't shit on others for their personal choices. Never sway people into buying a computer that you think is better for them. Unless you plan to, and are well versed enough to provide 24/7 tech support as they try to understand (and typically get frustrated over) something foreign to them, let them make their own choices according to their own comfort level. Instead, guide them in within their own frame of requirements.
When and if they're good and ready for a taste of the other side, they'll do that on their own. If they make a mistake, so be it- better they do that than you making a bad choice for them and them hating you for it.
Switching platforms is never as easy as it looks. Never mind the interface & compatibility issues, you're in effect making them change their computing habits and lifestyle. Imagine the implications of you asking your gf/wife to make some changes, and watch you get your ass handed to you. As with anything in life, if people wanna change, they'll do it on their own, certainly not by you telling them