Is church (& the Christian life) supposed to be a party?

...we shall never bring many souls to Christ, if we are full of that levity which characterises some men. People will say, "It is all a joke; just hear how those young fellows jest about religion, it is one thing to listen to them when they are in the pulpit, but it is quite another matter to listen to them when they are sitting round the supper table." I have heard of a man who was dying, and he sent for the minister to come and see him. When the minister came in, the dying man said to him, "Do you remember a young man walking with you one evening, some years ago, when you were going out to preach?" He said, he did not. "I recollect it very well," replied the other. "Do you not remember preaching at such-and-such a village, from such-and-such a text, and after the service a young man walked home with you?" "Oh, yes, I remember that very well!" "Well, I am the young man who walked home with you that night; I remember your sermon, I shall never forget it." "Thank God for that," said the preacher. "No," answered the dying man, "you will not thank God when you have heard all I have to say. I walked with you to the village, but you did not say much to me on the way there, for you were thinking over your sermon; you deeply impressed me while you were preaching, and I was led to think about giving my heart to Christ. I wanted to speak to you about my soul on the way home; but the moment you got out you cracked a joke, and all the way back you made such fun upon serious subjects, that I could not say anything about what I felt, and it thoroughly disgusted me with religion, and all who professed it, and now I am going to be damned, and my blood will lie at your door, as sure as you are alive:" and so he passed out of the world. One would not like anything of that sort to happen to himself; therefore, take heed, brethren, that you give no occasion for it. There must be a prevailing seriousness about our whole lives, otherwise we cannot hope to lead other men to Christ.

~ Charles Haddon Spurgeon

" ...exhort to be sober minded."
Titus 2:6

"Nothing is so hard ... as to overcome pleasures and follies"
~ Chrysostom.

... behave in every thing agreeably to the Christian doctrine. That ... men be sober... seeking comfort from nearer communion with God, not from any undue indulgence...there are general rules, according to which all must be ordered. Young women must be sober and discreet; for many expose themselves to fatal temptations by what at first might be only want of discretion. The reason is added, that the Word of God may not be blasphemed. Young men are apt to be eager and thoughtless, therefore must be earnestly called upon to be sober-minded...
~ Matthew Henry