They who shall enter into [the] joy [of the Lord] shall know what is going on outside in the outer darkness. . .The saints'. . . knowledge, which shall be great, shall keep them acquainted. . .with the eternal sufferings of the lost.
Within the framework of the Buddhist Path, reflecting on suffering has tremendous importance because -realizing the nature of suffering, you will develop greater resolve to put an end to the causes of suffering and the unwholesome deeds which lead to suffering. And it will increase your enthusiasm for engaging in the wholesome actions and deeds which lead to happiness and joy.
Man was made for joy and woe, and when this we rightly know through the world we safely go. Joy and woe are woven fine, a clothing for the soul to bind.
If there is suffering, then it's best to accept it, because it won't go away just because you pretend it's not there. If there is joy, then it's best to accept that too, even though you're afraid it might end one day.
We may as well face it: the whole level of spirituality among us is low. We have measured ourselves by ourselves until the incentive to seek higher plateaus in the things of the Spirit is all but gone (We) have imitated the world, sought popular favor, manufactured delights to substitute for the joy of the Lord and produced a cheap and synthetic power to substitute for the power of the Holy Ghost.