does moral practice make perfect?

a couple of interesting points came out in a response to the post on whether ethics should focus on problems. the first is just the idea that perhaps by focusing on moral problems and discussing them as hypotheticals, for instance, we can exercise our moral muscles in hopes of improving our response when faced with new moral problems. if moral practice does help make us more 'perfect' moral agents then ethics has good reason to focus on moral problems. so even though scenarios like the trolley problem mentioned in an earlier post may seem far fetched and irrelevant even to 'real life' trolley problems, we may be learning about how our moral reasoning works and how it can best be applied.

however, as often happens in philosophy, a further question arose in relation to this thought which brings us to the second point. and that is...how do the problems arise in the first place? or another way of posing this issue, how do we identify moral problems? when is a problem a problem?