IMHO what are you trying to prove by having a family members tattoo? That you love them? Is that something you need to prove by having ink smeared on your body? Im sure that there are better ways of showing that. I will never ever get a tattoo but i dont hate anybody who does. Im certainly not gonna judge Leo for getting one. Its his life he can do it if he likes it.
I don't think it's to prove anything as I am fairly sure (mostly based on the reasons from people I have met, who has those kind of tattoos) he loves his children's, wife and family regardless. It's more for himself, a personal expression that means something to him. It's not something he has done to prove his love I think, even tough I agree that there are many ways to express your love to your family. Maybe those ways are 'better' in some people's eyes, and that's why I wrote to each his own.
Hate? Lol, I don't see how you could legitimately hate a person just because of a tattoo, unless it's some gangrelated tattoo/obscene tattoo that represents something you find inhuman. I understand why some people find tattoos repulsive, and that's their choice, but hate? Come on now.