If in this life only we have hope in Christ, we are of all men most miserable. – 1 Corinthians 15:19

There is a poor lunatic in Bedlam, plaiting straw into a crown which he puts upon his head, and calls himself a king, and mounts his mimic throne and thinks that he is monarch over all nations and is perfectly happy in his dream. Do you think that I would undeceive him? Nay, verily, if I could, I would not. If the delusion makes the man happy, by all means let him indulge in it; but, dear friends, you and I have been undeceived; our dream of perfect bliss beneath the skies is gone for ever; what then if there be no world to come? Why then it is a most sorrowful thing for us that we have been awakened out of our sleep unless this better thing which we have chosen, this good part which shall not be taken from us, should prove to be real and true, as we do believe it is…The Christian has learned to think of eternity, of God, of Christ, of communion with Jesus, and if indeed it be all false, he certainly has dreamed the most magnificent of all mortal visions. Truly, if any man could prove it to be a vision, the best thing he could do would be to sit down and weep for ever to think it was not true, for the dream is so splendid, the picture of the world to come so gorgeous, that I can only say, if it be not true, it ought to be; if it be not true, then there is nothing here worth living for, my brethren, and we are disappointed wretches indeed-of all men most miserable.

My brethren, it is the most unhappy piece of knowledge which a man can acquire, to know that this world is vain, if there be not another world abundantly to compensate for all our ills. But O my brethren, if there be a world to come, as faith assures us there is, how joyous it is to be weaned from the world, and to be ready to depart from it! To be with Christ is far better than to tarry in this vale of tears. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0562.cfm