Wifi is becoming more common on desktop motherboards, but it's still not a guarantee, especially on the lower end. On the higher end they can throw in wifi to make the feature list bigger without cutting into their margins. Out of my sample size of 4 over the past 5 years, only two had wifi. And honestly, I'd opt out of having that if I could trade that for a lower price or some other feature I'm missing, since I haven't used the wifi on those boards at all.