Paul’s well known defense of the superiority of the celibate life:
One who is unmarried is concerned about the things of the Lord, how he may please the Lord; but one who is married is concerned about the things of the world, how he may please his wife, and his interests are divided.
Ambrose’s commentary points out multiple ways in which one gets chained to the world, the first of which is “the desire to live”. As a father I knew exactly what he meant – he was pointing at the terror that some accident will orphan your kids and widow your wife. Paul was speaking first the way in which the love that a provider is supposed to have for his family chains him to the world. How can I look at my five kids under 10 and say that I desire to flee and be with the Lord, since this would be far better (Phil. 1:23)? Still, in virtue of my baptism there is some sense in which I have to say this. And that’s an unavoidable way in which my interests are divided.