Richard God is not against human beings having pleasure; the dichotomoy you are making is ridiculous - we are allowed to derive pleasure from sex, but we are not allowed to have sex for the pleasure it brings? "God has given us all things richly to enjoy." What exactly is wrong with a married Christian couple having sex for the pleasure it brings them?
When I read responses such as this I fear that I have been less than clear. All I am saying is summed up by these:
James Durham
"But men sin more and oftener in the excess, viz. by carnal living with their own lawful married wives, and using marriage for lust, living in the lust of concupiscence, as the apostle calleth it; and that as the Gentiles did even in their marriage-stations, 1 Thess. 4. 5. And he calleth it, Col. 3. 5. inordinate affection; an affection which a man hath to his wife as to a whore, rather than, what becometh a wife; These things, when reproved, must not be offended at, but the Lord looked unto for the purging of this corrupt nature of such fithiness as is shameful even to mention."
John Calvin
Moreover, when spouses are made aware that their union is blessed by the Lord, they are thereby reminded that they must not give way to intemperate and unrestrained indulgence. For though honourable wedlock veils the turpitude of incontinence, it does not follow that it ought forthwith to become a stimulus to it. Wherefore, let spouses consider that all things are not lawful for them. Let there be sobriety in the behaviour of the husband toward the wife, and of the wife in her turn toward the husband; each so acting as not to do any thing unbecoming the dignity and temperance of married life. Marriage contracted in the Lord ought to exhibit measure and modesty - not run to the extreme of wantonness. This excess Ambrose censured gravely, but not undeservedly, when he described the man who shows no modesty or comeliness in conjugal intercourse, as committing adultery with his wife. Lastly let us consider who the Lawgiver is that thus condemns fornication: even He who, as he is entitled to possess us entirely, requires integrity of body, soul, and spirit...And that there may be no doubt about it, let us remember, that what the Lord here commends is chastity. If he requires chastity, he condemns every thing which is opposed to it. (
Institutes 2.8.44)
John Gill
Now for a man to possess his vessel in this sense, is to enjoy his wife, and to use that power he has over her in a becoming manner; and which is here directed to "in sanctification and honour"; that is, in a chaste and honourable way; for marriage is honourable when the bed is kept undefiled; and which may be defiled, not only by taking another into it, and which is not possessing the wife in sanctification and honour, it is the reverse, for it is a breaking through the rules of chastity and honour; but it may even be defiled with a man's own wife, by using her in an unnatural way, or by any unlawful copulation with her; for so to do is to use her in an unholy, unchaste, wicked, and dishonourable manner; whereas possessing of her according to the order and course of nature, is by the Jews, in agreement with the apostle, called, מקדש עצמו, "a man's sanctifying himself", and is chaste, and honourable. And it may be observed, that the Jews use the same phrase concerning conjugal embraces as the apostle does here. One of their canons runs thus: "though a man's wife is free for him at all times, it is fit and proper for a disciple of a wise man to use himself בקדושה, "in", or "to sanctification".
John Brown
This commandment [7th] FORBIDS,...immoderate and unseasonable familiarity between married persons, 1 Thess. iv. 3, 4. Heb. xiii.4. Lev. xv.10. xviii. 18. 1 Cor. vii. 5. ("Of the Law of God", Systematic Theology pp. 485)