Much of my iPad cellular data usage has come when I've been traveling and WiFi access is not reliable nor readily available. Heck, a lot of airports don't have free WiFi.
Very true. Or if the wifi is free, it's a often a pain in the arse to enable. Plus there's always the question of who's sniffing what packets.
As I've said before, cellular is a nice convenience on an ipad. I can afford it and enjoy just having connectivity anywhere anytime without futzing around with tethering or finding/logging into wifi if it's even available. (And for me tether plus mean losing unlimited data and paying paying a bunch extra per month for a tethering plan)
Why the vitriol in some of the opinions voiced here? Can people not comprehend that the right choice for them isn't necessarily the right choice for others?