I’m going to expand on something I said earlier. According to Arminians, why does God damn anyone? Why does God send anyone to hell?
The stock answer is that God can’t force free agents to trust him, love him, worship him.
There are, of course, obvious problems with that answer. Monergism isn’t forcing the sinner to do something against his will.
Likewise, even on libertarian assumptions, it’s implausible to insist that there’s no possible world in which every agent freely does what’s right.
However, let’s examine the question from another angle: To say that God can’t make everyone go to heaven doesn’t logically entail God sending anyone to hell.
If the Arminian God can’t make everyone believe in him, so what? Why must he make unbelief a damnable offense? Why would he consign someone to eternal torment or everlasting misery just because they refuse love or worship him?
Wouldn’t it be more loving to create a tropical paradise for them to spend eternity? Even if they were thankless, wouldn’t we expect a loving God to do whatever he could to make them as happy as possible? Do as much for them as they allow him to do? Do them good (rather than harm) regardless of their ingratitude?
Now some Arminians (e.g. Rauser, I. H. Marshall) are annihilationists. But that raises the same question. If God can’t make everyone go to heaven, the logical alternative is not to zap them out of existence. Why not let them continue in unbelief? That’s a lower quality of life than heaven, but it’s better than oblivion.
Maybe an unbeliever wants to play golf forever. A limited existence, to be sure, but a loving God could easily let him spend eternity in a wonderful golf resort, with other godless golfers.
Perhaps the Arminian would say that let’s unbelievers off too easily. But there are problems with that response:
i) First of all, that’s a very different argument. The Arminian is no longer contending that God must send unbelievers to hell because he can’t make them believe. Rather, he’s saying God must send them to hell because they’re unbelievers.
ii) but that just pushes the question back a step. Why must a loving God make belief a condition of avoiding hell?
iii) In what sense would God be unjust if he didn’t punish unbelievers? According to Arminians, Jesus made universal atonement for sin.
Perhaps the Arminian will say sinners must believe in Jesus’ atonement. If so, why does a loving God make that a prerequisite for avoiding hell? Why can’t he just forgive the redeemed, whether or not they love him back?
According to Arminianism, God is as loving to sinners as they permit him to be. He can be more loving to some than to others. That’s up to them.
But love doesn’t require reciprocity. Indeed, there’s a type of disinterested love that gives and gives, expecting nothing in return.