Life has the sense you bring to it. If you find no reason to be alive personally, there is none for you. If you decide that since you're here and have life you will try to accomplish things while you know you exist then it will have meaning. Do good works, bring beauty or compelling thought to the world through the arts, push back our ignorance through scientific research and many more avenues exist where you can personally make a difference in the quality of life for others and yourself. All these things can bring meaning to life.
If you are asking about some grand design that imposes meaning on our lives from without, frankly no one actually knows, and who cares anyway? Be responsible for finding your own reason to exist.