It's the verse where Paul says that if Christians are feeling strong sexual urges, then it is better to "marry than to burn with lust." But this verse seems like it could lead to all kinds of bad outcomes - to put it bluntly, if two Christians are horny for each other and get married so as to get the sex out of their system, so to speak, then that doesn't address other issues - what if they're incompatible as marriage partners? What if there are major character flaws? etc. etc.
Marrying for the sheer sake of getting sexual urges out of the system sounds like a recipe for disastrous marriages.
Well, I'm not 100% sure that your interpretation of this verse is wholly accurate. I think there is application to what you are saying given some certain circumstances; but if someone is finding themselves unable to stop "hopping into bed" with just about anyone they run into, there's a serious spiritual problem there. And I don't see that situation as being what this verse is talking about.
Outside of that though, there are other scenarios.
You can have people who just want to be married and are looking for a partner for the sake of companionship. You could have people who want to be married and are looking for a partner because they want to have a family. You could have two people in a relationship that is headed in the marriage direction; and for practical purposes, they should just get married.
".... they can not contain..." "Contain" is also translated "be temperate" and it could be temperance in a variety of areas; not just for the sake of sexual gratification.
Also "burn"; for purposes of literal translation means "to ignite" or "set on fire". But in a couple of places, it's also translated "angry".
So for example - someone who wants to have children. They should not be "burning" of desire, or resentment because of verse 7: "every man has his proper gift of God" and Paul, who at that point didn't have any desire to be married.
It is suspected that part of what was going on in the Corinthian church that stirred up a lot of confusion is that they believed they lived immediately in the "last days". So there was very real tension over practical issues like - do I get married / do I not get married? Do I buy a house? How much should I save up for "retirement". Practical questions like that were also part of the cultural backdrop.
Obviously though, I agree with you; you have to be prudent if you want to get married and also be praying for help if you find you got problems with self control. "No temptation has taken you.... that God has not provided a means of escape...." (And
that can be a whole other topic!)