I'm hardly ever on facebook. I have never understood the appeal of it to be honest. Other than it being a competition on how many friends you have and who likes your posts. And the status stuff that shows up on your wall.
I've seen facebook destroy marriages, friendships and the self esteem of our youth.
As for texting, I personally hate my cell phone and only use it for calls. And even that I don't like to do.
Yes I think this stuff too can be addicting to the point of being just bad for you.