It’s interesting - material thing makes us slaves. Those things own us.
Obtaining them usually makes us want to retain them and to have more.

Psychology and research on Dopamine is one thing that proves that. We are most rewarded during craving and trying to obtain things period. At exact moment we get what we want, the Dopamine reward stops. Which unavoidably leads to a depression period.

Misunderstanding that most try to end that period by wanting and trying to get more. Which leads to a vicious circling trap.

Thanks for reminding me, James! ;)