Yes, it's important to embrace all these noble principles. But if you are going to dismiss all these stories as fables, then I would question why you would want to be a Christian in the first place. The general view is that Christianity has a historic basis to it, the foundation being the hope of the Resurrection.
It would work like this. You could beleive that Jesus that man probably lived. You could believe that he was most certainly murdered by enemies he made, dangerous one's. You could believe Jesus to be an iconic figure, something to aspire to, yet, at the same time, accept that man has always liked stories, and that aspects like the resurrection were most likely stories. You could do all of those, and be a great mother, father, son, etc. More commendable that the born again Christian who only 'finds religion' after commiting some serious crime, as is often the case in prisons, in the US.
If one does not believe in the historic Christian faith, then why not dabble in another religion? If Christianity wasn't true, then I might consider falling back on Judaism or perhaps Buddhism, which I have. They seem to embrace these principles as much as anyone else.
The thing that I like about Buddism is that there is no DEMAND from Buddah to obey him. You are encouraged to take what you want and reject what you want, without punative measures.
The question is whether Catholics are Christians. From what I understand, the Catholics take a strong traditionally historic view. And they are doctrinally steeped in it. But knowledge or even ritual about a thing does not make you a Christian. It's whether or not you have genuine faith in God and trust Him for your life.
Off topic, but why the big division with Protestants? Even in recent years we have seen conflict between the two?
It's good to be good. "To obey is better than sacrifice" the saying goes. But all too often, I think a preoccupation on the 'sacrifice' de-emphasizes the need to live decently and with love. If the attitude is: "I'll just live up like I want to and go to confession on Saturday night and/or Mass and I'll be good to go until next week" is a bit hypercritical and misses the point (this goes for anyone, not just Catholics, btw).