Nothing is more important than one's eternal destiny. We are all headed somewhere. No exceptions. To deny that there is life after death is to reject the veracity of the Bible. If you take God at His Word, then you know that this life is only a journey to the next. Each of us enters this world in the same way, and each has an appointment with death. ("And as it is appointed unto man once to die, but after this the judgment." Hebrews 9:27) It is what lies between that makes the difference.
There are two kinds of citizens: those who live for the fleeting moments of this life and those who are receiving a heavenly kingdom. For the citizens of the heavenly kingdom, the road can be lonely, difficult and.... well, strait and narrow. To expect anything else is unrealistic if we believe the words of Jesus. But God does not put us on this path and say, "Go it alone; get there as best as you can." He has graciously provided help, light, fellowship, times of refreshing, and grace a-plenty for the way.