Worldly Behavior Isn't Right - Christians Who Befriend Them Fail
Because Worldlings thrive on evil deep inside themselves, yet they take advantage of the softer atmosphere that the Church has built over the centuries and pretend to hold to it, they take advantage of lots of little situations where their outward behavior varies from their pretense for profit. This causes the Church to rely on false claims of nobility and the attendant false assumptions that come from them. Some Worldlings desire hurts where it doesn't make sense. And it gets stranger once an evil is normalized in society, such that greed is not really the bottom line for companies all the time, but becomes a cover for even more wickedness!
When the Christian tries to anticipate and appease his Worldly friend, the biblical mandate to not make friends of the World shows purpose as the Worldling takes advantage of that Christian's failure to know who his enemy is, because that Worldling acts as an enemy, even to his other Worldling friends - it's their way to hate each other for fun (haven't you noticed, dear Christian?).
The Bible is against boasting and pride, because we should not think we are the source of power. The Bible praises and lauds God's power, and the World sees Christianity as arrogant, but we Christians must not see it that way. The World tries to outflank us on righteousness, but we must be more versed in righteousness to know this truth for our protection, so we do not buckle before the World's twisted perception.
Mimicking God's good whisper to His children over years to slowly encourage us and teach us to lay down our evil, Worldlings calmly whisper instructions to dominate during crisis management, even though they are willing to cruelly lock us away for scientific study or kill us for their protection or because someone else told (or ordered) them to. This is evidence that they know about goodness and have rejected it for their own purpose, and it is evidence that their form of light is dark (how, as the Bible asks, dark is their darkness then?!).
When the World appreciates beauty for beauty's sake, it's part of a sick gambit to justify life or something, whereas the Church can simply appreciate it.