I love your layout - both visually and your thoughts. I teeter back and forth about going on Facebook, but haven't tried it yet for exactly the reasons you state. Great layout and insight!
I do agree with your thoughts. Actually, I love FB, but I only post "uninteresting" things about myself. Like, choose the least important thing from your day and say in in a fun way. I see it as a stylistic exercise, the more so since I do each entry both in Slovak and English. Makes for a nice translation routine.
Lots of my friends do the same; while I know people who's share ANYTHING, without realising that maybe they could use filters for private stuff...
I totally agree with you. Sometimes I cannot believe how personal things people share about themselves...
Your layout is perfect, I love the combination of doodle/hand-drawn style and typewriter font used for a journaling!