I mentioned earlier than there may be good arguments for voluntary poverty, I do feel obliged to point out that one that is still fairly common in Christian circles is just a pile of pure, steaming crap.
I mean the social justice argument that it is wrong to be rich while others are poor or, in the more extreme versions that even in a society like ours where there is virtually no one without means it is damaging to have large disparity in incomes. This argument is based on simple ignorance of economics and is not a good argument for voluntary poverty. In a society of scarcity, we could reasonably say, as John the Baptist did, that anyone with two coats should give one away. And if you want to give your coat to someone please go right ahead. But if you think that giving your wealth away is going to reduce poverty and suffering, you're just wrong. It won't make any significant difference at all.
Even worse is the argument that takes Christ's message as providing justification for taxing someone else's wealth away to eliminate poverty. (I won't name names but one very prominent Catholic politician seems to think their faith justifies this.)