Something that has struck me wrather odd about using Stasis Field/Stun line of force powers is that a Light Side Jedi would never attack a helpless enemy. The very nature of this line of powers is to make your target immobile and helpless while you pretty much kill them with impunity. Doesn't that seem a little non-jedi like, and more dark side?

The power itself is LS; what you do after it is different.

It's more a conequence of it being a game - it's like asking why you can't knock all your enemies out rather than killing them all.