We use the things of this world

but we don’t serve the things of this world.

And they that weep, as though they wept not; and they that rejoice, as though they rejoiced not; and they that buy, as though they possessed not; And they that use this world, as not abusing it: for the fashion of this world passes away. 1 Cor 7:30-31

Use this world, but don’t serve it.