I think there are many legitimate ways to frame the issue. This is one of them. I disagree with the Apostolic position on free will because it supposes that we are good enough or qualified enough to make the important decisions all on our own, with no more than an arm's length offer from God plus a nudge that is given to everybody. I never would have accepted that offer if that's all it was.
If our intended purpose [is] to freely worship God for ever, then we can’t do it if we are robot slaves.
Robots are not sentient beings, we are, so the analogy does not fit. I think the term "robot" is used by many who are uncomfortable with the idea of God being in control. People like to feel in control. ...... As to being slaves, the Bible says that before we were saved were slaves to sin, but after, we are slaves to righteousness. I think that is a wonderful idea, and want to forever be God's slave.
It might be a wonderful idea, but I think that it violates the whole free will thing. If your worship is coerced in any way, shape or fashion, then it is null and void and worth nothing.