damn you you took my answer!!! lol
I never used to but now fear takes over and I feel I leave a lot unsaid.
Yes. Keeps things interesting.
Because some people can't handle the truth yet, and I don't want any reaction or change toward me if they knew the things I know about them.
Least said soonest mended. Words can hurt, sometimes easier to get past an upset if you did not say all you wanted to say in the moment.
i don't trust many people, and those who need to hear it arent listening
Because sometimes people need to not hear things
Sometimes, as I may have tried before and got nowhere. It's easier not to bother when you know you're taken no notice of, anyway.
Tact, I suppose. That, and I'm a rather private person IRL, and about certain things online.