While it is true that in old days religion was used to explain the world around us, it is now a much more subjective thing. Today, religion is used for reasons such as moral support, coping with depression, and simply just having something to support oneself spiritually. Religion as you view it is still around, yes, in the form of Christian conservatives and such, but they are the minority.
To believe in a God or gods is not unethical simply because it doesn't properly explain the world. People have the right to not know things, or to shut their eyes and ears to science. While there are fundamentalists in religion and they are an issue, what with following their scripture to the word, they are not an excuse to dismiss all religion as unnecessary.
Religion has always been more than explaining the world around us. In a way, you are also shutting your eyes and ears to the truth when thinking of religion in the way you do with this opinion.
The world has mysteries that you confront and problems that you try to solve. However, mysteries are different from problems. The questions, "Does life have meaning?" "Is evil punished and goodness rewarded?" and "What is the cause of suffering?" are mysteries. No matter how many times philosophers and prophets provide answers to these and other of life's big questions, the questions remain real and pressing in every generation and in every life.
The questions "What causes lightning?" and "How will I spend my evening if the cable goes out?" are problems. Of course, not all problems are this easily answered or (to be honest) this irrelevant. "How will we feed the children if I lose my job?" and "Where should we go if the war comes to our front door?" are some of the bigger problems that people face.
For many folks, trying to find answers to life's mysteries is the place where the religious impulse begins. When you understand mystery, you come to understand God more as an ongoing action than as a thing and the religious life more as a quest than a destination. Comprehending such mysteries helps you figure out how to survive life's problems and enjoy life's blessings.
The search for meaning
Every culture has some kind of religion, and all faiths answer the question "What is the meaning of life?" Humanity's search for an answer to this question is one of the main reasons that people are drawn to religion. The answers, although different from religion to religion, give people's lives purpose, meaning, and hope.
The different religions have their own views on the meaning of life:
•Hinduism: Gain release from the cycle of rebirth and merge with the eternal Divine, thus escaping an inhospitable world.
•Buddhism: Gain enlightenment and, in that way, free yourself from the sufferings that come from illusions and attachments to life.
•Judaism: Do God's commandments.
•Christianity: Try to love the way Jesus loved.
•Islam: Submit oneself to the will of Allah.
•Taoism: Achieve inner harmony.
Accounting for sin and suffering
"Why is there suffering in the world?" That's another big mystery that religion addresses. For most religions, suffering is the result of human failing or the lack of human understanding. In monotheistic religions, suffering is wrapped up in the concept of sin and human failing. In the Eastern religions, suffering is the result of humankind's lack of understanding, or enlightenment. Whatever the source of suffering and death is — human failure or human "blindness" — religions give their members hope by offering ways to overcome suffering and death. In Western religions, the goal is salvation; in Eastern religions, it's enlightenment.
People in the old ages (Medieval, Neanderthal, Etc) created stories of divine beings to explain why and how they were created, and to give themselves a place in the world. Now that we are in the modern times, and have access to things like science and technology that can explain things like atoms and elements, why do people still follow the outdated teachings of religion? I mean seriously, it's not really ethical or morally sound to say that someone died to save the rest from the evil-doings of their own, when they should have died or at least begged for forgiveness for themselves, instead of having some stranger to them die for them. What's to stop them from ignoring the death and continuing with their sins?
I'm not really hating on religion, just pointing out how illogical it can be. There is definitely something comforting about blind faith, but to devote your life to something you've never seen nor been part of? Not smart.