I was going through this report by Cisco on "What do Consumers want from WiFi" and came across this interesting picture.
Another interesting observation from above is that the survey puts WiFi and Cellular security to the same level. Though the cellular is more secure in case of an open public WiFi scenario where an eavesdropper may be able to get hold of login/password information it is generally at the same level of security to a secured WiFi. On the other hand with cellular, lawful interception may be much more easy as compared to using secure WiFi.
I am sure that the content of last paragraph are debatable and am happy to hear your viewpoints.
A slidecast of the Cisco whitepaper mentioned above is embedded as follows: