My main concern with there being so many denominations, is that some of them are 100% adamant that they're completely right, and everyone else is wrong. I wouldn't be surprised if a few became so bold as to tell people that if they don't follow their group's rules, they'll go to hell for it. Jesus kept it very simple, saying that He was the only way, and the Ten Commandments were summed up with two standards: "Love God with all your heart, mind, soul, and strength, and love your neighbor as yourself." We as fallible humans are the ones who keep over-complicating everything.