I am indeed a moral realist.

The possibility to go on indefinitely with our lives may become a reality and it will present us with a temptation.

There are some particular moral truths that I believe we have access to (such as the one not to inflict pain on a sentient being for no reason).

Being a moral realist I see normative ethics as a search of the truth about our obligations and a search of explanation; the idea is that moral principles can help us to a moral explanation of our particular obligations.

I am now a decided non-naturalist realist. And today we may even speak of a trend towards non-naturalist moral realism.

It is true (independently of our conceptualisation) that it is wrong to inflict pain on a sentient creature for no reason (she doesn't deserve it, I haven't promised to do it, it is not helpful to this creature or to anyone else if I do it, and so forth). But if this is a truth, existing independently of our conceptualisation, then at least one moral fact (this one) exists and moral realism is true. We have to accept this, I submit, unless we can find strong reasons to think otherwise.

I was conscripted to military service, and my gut feeling was to refuse to serve. I did not want to kill other people. This seemed to me wrong, if not in principle, so at least in practice.