I've also recently become aware of the depths of how insecure our data really is. windows recall is one problem, but they make the o/s, whos to say they arent sending data to hq about you anyway. then you have firmware that can do what it wants before you even get to the o/s layer.
encryption is nice if you own all the hardware and software before you hit the network (like on an embedded device for example) but then what about the security at the receivers end? even the pro's make mistakes in this area.
so while i try not to give away my data for free, if youre networked, your not 100% secure. im not even sure what other toys eavesdroppers have to get around problems but it sure is an interesting field!