I have argued that we are morally responsible!
Look, why does Strawson think we're not morally responsible? Because he thinks it is impossible to be morally responsible. That's why. If he thought it was possible for us to be morally responsible, he'd no doubt agree with me that we are indeed morally responsible.
So, where do we - Strawson and myself, that is - disagree? We disagree over whether it is metaphysically possible for us to be morally responsible. That's the issue.
What's his case for thinking that it is metaphysically impossible for us to be morally responsible? This:
1. In order to be morally responsible, our decisions need 'not' to have been caused by events that we had nothing to do with.
2. All of our decisions will have been caused by events that we had nothing to do with unless we have created ourselves.
3. Therefore, in order to be morally responsible, we need to have created ourselves
4. It is not metaphysically possible to create oneself
5. Therefore, we are not morally responsible
Which premise have I challenged? Premise 2. So the issue is whether premise 2 is true. The issue is not whether we are morally responsible or not, for if premise 2 is true, then I agree with Strawson that no-one is morally responsible, and if premise 2 is false, then Strawson would no doubt agree that we 'are' morally responsible. So, again, the issue is whether premise 2 is true. That's what it all hinges on.
Now I presented an argument against 2. That argument you have ignored. So, I'll make it again.
Remember: I agree with Strawson over 1. I agree that to be morally responsible, your decisions must not trace to external causes - causes you had nothing to do with. Maybe you disagree with that - but both Strawson and I and, to date, virtually everyone I have discussed this with, has shared the rational intuition that yes, indeed, if a decision's causal story traces entirely to external causes, then one is not morally responsible for that decision. And there is no question the intuition is widely shared, for it is the key intuition that motivates incompatibilist positions on moral responsibility-grounding free will. And for as long as there has been debate over exactly what that kind of free will involves, there have been those - normally the majority - who defend incompatibilist views about the matter.
So, premise 1 is very well supported by rational intuitions - as both Strawson and I and everyone else who knows anything about this debate or has thought about it seriously for more than a few minutes would agree.
The issue, then, is not over the probative value of rational intuitions. No-one seriously doubts their probative value, for all arguments for anything appeal to rational intuitions. Hell, the validity of an argument is itself something that we can only tell by rational intuition. So, no matter how much you want to dispute the probative value of rational intuitions, that's beside the point for a) to do so is to do no more than demonstrate confusion and b) their probative value is not at issue.
Back to premise 2 then. What was my case against it? Well, I pointed out that if we are prime movers - so, if we have not been created - then the conditions of premise 1 would be met.
What Strawson has done is assume that there is only one way in which the conditions of premise 1 would be met - namely, if we create ourselves. What I am pointing out is that there is another way. Namely, if we exist uncreated. If we exist uncreated, then our decisions will not have causal histories that trace entirely to events outside of us.
To counter my case you would need to argue that it is impossible for something to exist uncreated. That's a tall order. We seem to know by rational reflection alone that if anything exists, at least something must exist uncreated, for if anything exists it has either been caused to exist or it exists uncreated. And if it has been caused to exist, we must eventually posit something that exists uncreated to operate as the originator of the causal chain that produced it. Plus, you have to argue that it is positively impossible for something to exist uncreated, not just that nothing in fact exists uncreated.