Glad it didn't go bad for you.I notice you are from the great Republic of Texas.
This occured in Colorado?
Whole different set of rules.That got famous,lately.
I agree,your own self debriefing found some errors in judgement.Live and learn.
In most states,under most conditions,deadly force is about having no other option to survive or avoid great harm.Even if you were able to catch the guy redhanded and hold him with a paint ball gun without getting killed,you would likely be arrested and sufficiently prosecuted to lose your second ammendment rights.