If I were to follow any spiritual belief system, it would certainly be one of the older ones, not a relative newcomer like Christianity that cribbed most of its core doctrine and holidays from other religions.
At their heart, most major religions, Christianity included, preach love and kindness, doing unto others, and generally not being a dick. These are all tenets that I think any rationale, feeling being can get behind.
Other than that, I cannot find any compelling reason to follow any religion, or spiritual belief system. As they exist today, almost all are used to control the masses through fear, and Christianity, as it was your question, might be the most guilty of that, at least in Western society. Whether a person named Jesus ever existed, other than in the history/fantasy/poorly-copied-through-the-ages tome called "The" Bible, I do not know. But I have a feeling that if so, he was likely exploited by the Catholic church, the progenitor of Christian belief, for its own nefarious purposes, as have been many since.
I am tired of having my life impacted, in a country founded on the tenet of separation of church and state, by a religion that, largely, wants to rid the world of me and my ilk for simply loving who I love. And all the while its ministers, in all their pomp and piety, pledge to know better about the inner workings of this world than the hoi polloi, yet ruin the lives of young children, drive its own followers to their deaths for imagined "sinfulness," (recovering Baptists are a thing, and some of them don't make it) and cause women to seek back-alley abortions; the same ministers who eagerly send young men to their deaths in war, turn a blind eye to the starvation of the babies they want to force into the world, and who drain the pocketbooks of their elderly faithful. For what, an invisible sky friend for whom there is not one shred of concrete, logical evidence of existence? A concept made so inscrutable (holy trinity) that he can be used for any purpose - an all-loving father one minute, and a vengeful judge the next?
In short, no. I think I'll look for friends on this plane of existence while I'm here. I will admit that blind belief in a superhuman entity who is described at best as something of a bi-polar parent seems to be comforting to some, especially if they indeed had bipolar parents. But I cannot suspend my disbelief long enough to derive any benefit from that belief.