A significant other may have entered a program that watches and listens to everything you do all day as well.....a little creepy huh? Paranoid yet? ;)
They prefer to ignore the truth,to deny it,to pretend it don't exist.Much easier for them this way.
Not everybody has something to hide. Plus thats a pretty poor argument against cellphones. Being on the internet (like you are) is much easier to track down.
I use encryption if I really want privacy otherwise it's just the way things are now.