In my not-always-humble opinion, there are only two fundamental rules that Jesus ever taught: Love God and love your neighbor as yourself. These teachings permeate his parables and lessons. He never mentions anything about needing to profess a belief in him; he never says that people have to give up anything but their selfishness. The Good Samaritan never professes a belief in Jesus' divinity, yet he's held up in the story as an ideal for everyone to strive for. For historical context, the Samaritans were a sect that were feared and hated by mainstream Jews at the time; for Jesus to hold a Samaritan up as an example of ideal behavior would have shocked his audience.
Similarly, when the rich man's son asked, "What must I do to get to Heaven?" Jesus said, "Sell everything you own, give the money to the poor and follow me." Strict Biblical literalists have a lot of trouble with this passage, often claiming that Jesus was making a point about charity. I respectfully disagree; it's too simple for the deep, complex messages Jesus used his parables to convey. "The first shall be last, and the last, first." You want to find Heaven? Get over yourself. Stop worrying about what you want and look at everything the people around you lack. Do more than look: Help. The only thing wrong with having and enjoying luxury is when you let it blind you to the suffering around you.
The things that many Americans now consider fundamentals of Christianity are things that Jesus never spoke of, and indeed, wouldn't even recognize or would actively oppose. Opposition to homosexual rights, opposition to women's rights, opposition to governmental assistance for the needy, the myth of the "self-made man", enforcing Christianity as a state religion...the list goes on. Just on that last point, I have only one thing to say: "Give to Caesar what is Caesar's and give to God what is God's." Additionally, the insistence on "justification through faith" is used as an excuse for all sorts of things that have demonstrable negative impacts on other people's lives. Every time Jesus speaks of judgement, he refers to judgement based on what a person DID, not what they believed.
I'm agnostic. I think the only afterlife we're guaranteed to have is the impact we leave on others; anything more is an unprovable hypothesis at this time. I'm not convinced Jesus existed as described in the Bible. I recognize that, while the teachings written in the Gospels were far ahead of their time, they were still very much a product of their time...would you honestly tell someone to visit a priest and have themselves anointed with oil in lieu of seeing a doctor? Or that women should only be considered in the light of how helpful they are to men? I draw inspiration and guidance from multiple different sources and traditions. But I consider myself a Christian in the same vein as the Good Samaritan...I try to help people however I can, even if it means a little immediate inconvenience. I'm far from perfect, but I don't have to be...I just try to make sure people have what they need and let the rest take care of itself.
As for the mocking and making fun...as Jesus showed when calling people out on their hypocrisy, what people often need most and want least is a swift kick in the ass to shake them out of their complacency. If this site could be said to have any higher purpose, I think that would be it. To shake people up, get them to think about what they've been taught, and make them DECIDE what they believe, rather than parroting what their parents or pastor say.