I feel like everything you’re saying is completely Christian, in fact, and if you feel that it’s not, it’s because someone’s not giving you the whole picture. Christianity isn’t something you have because your parents took you to church, or because you were baptized when you were little, or for any external reason. Faith in Christ is a choice, and a choice only you can make, and I think the fact that you’re waiting for that is very wise.
Also, being a Christian does not mean you have to have a certain political view. I define myself as a communitarian, many of my beliefs being liberally oriented, including gay marriage. Being a Christian is about loving others, and glorifying God, and while there are things God commands of us, the beautiful thing is, even if we don’t follow them, He still loves us completely and unconditionally. And, I can say, I personally want to strive to be like the people in that picture for Jesus, because it’s the exact same thing He’d do.