I totally understand. You are facing the classic dilemma of privacy vs convenience. Personally, I distrusted facebook so much that I have avoided any of their products since 2013. Obviously a major win for my privacy, but it sacrificed some convenience -- then I had no real-time way to communicate with my relative in India.

In the end, you'll have to do some introspection to see if the convenience gained is worth the privacy lost. How essential is it that you communicate in real-time with your relatives? Would your relationship be substantially different if you sent email or wrote letters?