If you are going adopt a doctrine you need to site scripture and not the Church.
This is what my Bible says: The Church is the Pillar and Ground of Truth (1 Timothy 3:15)
Nothing in there about scripture being the pillar and foundation of anything.
Have you actually read the Bible, or just the verses you quote out of context?
1 Cor 7:3-5 The husband should give to his wife her conjugal rights, and likewise the wife to her husband. 4 For the wife does not have authority over her own body, but the husband does. Likewise the husband does not have authority over his own body, but the wife does. 5 Do not deprive one another, except perhaps by agreement for a limited time, that you may devote yourselves to prayer; but then come together again, so that Satan may not tempt you because of your lack of self-control.
Matthew 19:10 The disciples said to him, “If such is the case of a man with his wife, it is better not to marry.” 11 But he said to them, “Not everyone can receive this saying, but only those to whom it is given. 12 For there are eunuchs who have been so from birth, and there are eunuchs who have been made eunuchs by men, and there are eunuchs who have made themselves eunuchs for the sake of the kingdom of heaven. Let the one who is able to receive this receive it.”
Matthew 19:5.
Millions of men over the age of forty suffer from this problem and still enjoy a wonderful marriage.
LOL! That's why Viagra is such a very unpopular drug - because impotent men are so happily married.
I am young (23) but still feel I could be happily married and never have sex over the course of my life.
Good luck finding a spouse who feels the same way.
If you are going adopt a doctrine you need to site scripture and not the Church.
Here's an interesting passage of Scripture in which Saint Paul tells us why he is writing the Scripture in the first place:
"I write so that you will know how one ought to conduct himself in the household of God, which is the Church of the living God, the pillar and ground of the truth."
Your attempt to set up the Scriptures and the Church as opposing forces is illogical. The Church is the human author of, the preserver of, the defender of and the interpreter of the Scriptures - and is guided in these tasks by the Holy Spirit.