The Protestant answer is the Pauline answer from your response in bold.
There I was struggling greatly with lust (for the opposite sex), but do not recall any Protestant (Arminian) advice that I should seek a marriage partner. What so many fail to realize about chastity (perhaps because they lack it themselves) is the idol it can easily become. How easily from the depths of indwelling sin, it can psychologically become a means of looking down on others, a means of self-righteousness.
I don't doubt this, though it is not my experience. Before I was a Christian, I had an insane libido that put everyone to shame and God literally turned it off the night before I accepted Christ. Being that all of the sudden it was so easy, I decided to just take what it said in 1 Cor 7 at face value and be celibate. I personally came to realize after two years or so that even exercising self control in every possible way (use your imagination) I could not prevent even dreams from occurring or even the knowledge that I liked the sight of a woman and I had to purposely block out thoughts. At this point, I decided to look for a wife and I have now been married for two years.
I say this story, because for me it was never a matter of self-righteousness, but rather I knew clearly it was an act of God (which later gave me an appreciation of how God can literally change the will as the tenets of Calvinism presume.) However, I do think that it is easy to boast in such gifts as if they belong to us, and from an Arminian viewpoint, what other conclusion can one draw?
If by the grace of God and enabling work of God the Holy Spirit a person can be single and chaste for the glory of God according to His will, then by all means. But this is not the "norm", the norm is "be fruitful and multiply", and I cannot imagine a better world, than one where Christian have large families, where principally (in theory at least) would increase the number of Christians on the earth. Whereas chastity would more likely result a decrease of the number of Christians on the earth. The Covenant household of a Christian cannot be underestimated at the expense of "chastity".
I do not share your concern about a demographic epidemic for Christians if they take Paul seriously. God will convict the heart that reads 1 Cor 7 to take the advice according to His will for that man or woman. There will always be Christian parents and children, and there will always be children who become Christians despite their households, and children stay in their sin despite the beliefs of their parents.
For the record, St. Boniface obviously seeks discord and I really wonder how he thinks he is edifying anyone here.