It’s not simply a matter of Teivos.
As oomis pointed out, the Abishter called this world Tov M’od. He wants us to enjoy and savor it (l’shaym shamayim and with the aim of increasing our gratitude to the Abishter)
It is a matter of realizing our Kedushah and separating from the Nations, AND their ways, to the extent that we can.
I understand why so many Yidden see nothing wrong with this. Who could blame them? This is the quiet and insidious breakdown in our beautiful Mesorah and heritage, that the wealth of america has quietly hidden from us, even as HaKodeshBorchu has hidden his face from us.
But he revealed His hidden face on Purim!