Is Bluetooth or Infrared that much more helpful than wifi or are they outdated?

Not really Outdated but Wifi is much better... though they had different purposes, at some point the also have same purpose but Wifi is much helpful for me... those two are slower in transferring data... wi

...bluetooth and infrared has limitations as to transfer speed, file size, distance of communicating devices,.....etc.....while wifi has an excellent performance on all category....

...it really depends on the user, BT and IR are ideal for cellphone use because of the cellphone's limited memory and operating system, while wifi is best for computers,,

...also, BT and IR are usually used in small file size transfer while wifi is usually used for internet