To all of you posting about how wifi is superior to simulators or vice versa, stop. This is not what the OP of the thread asked to be discussed, he/she was just curious about how many people still used wifi. It is fine to list the reasons why you use the battling medium you do, but as AnakBaé pointed out, the only real reason to use one over the other is personal preference. The only place that the "wifi/simulators are better" posts are going is into mindless fangirling and probably infractions all around for going off topic.
Now that that's through, I used to do wifi, and believe that I will return to doing it for XY, but for now I've been sticking to simulators due to convenience. I also used to use simulators as sort of a testing ground for teams so that I wouldn't have to spend the time making them ingame if the team turned out to be terrible, and if it was good, I would take the time to get it on wifi.