My Facebook experience was long ago, before the first tidal wave of protests about their privacy policies changed things. Opt out options were well hidden. I understand that it is possible to use it quite reasonably now, but the prior experience, early on, left a level of distrust that I have no compelling reason to attempt to overcome. I email people from SE Asia to Europe, but email it still my preferred method to stay in touch. When I travel I do use Skpe, and not uncommonly buy time to call from a computer to a land line. But as with other things online, I don't stay constantly available; when I'm done, I sign out. Hell! I don't even keep my cell phone on unless I've arranged to meet up with someone at an as yet unspecified location while I'm out and we need to connect by and by to accomplish that.
I love the choices we have that make staying in touch easier, but I'm only interested in a few of them.