Privacy?

I'm trying to decide if I want to make my blog more private because I have had a few people think I am crazy posting my childrens pictures because of predators or porn. If I did that then everyone who would view my blog would have to login in before accessing my blog. Do you think I should not worry about it or do it? You guys tell me what you think because you'll be accessing it. Also I was reading one of Bailey's last comments on her blog and it is someone wondering if she wanted to make money I don't know if that was for real or someone she knew.