Is it futile or contradictory to try to make Capital Punishment more humane?

For those states that use capital punishment, some have tried to come up with new, more humane ways to execute a man or woman. I believe the lethal injection to be an epitome of this. I see a problem; it is almost more for the public and executioners than for the subject? I myself would shudder at the prospect of slowly falling asleep only to know, soon after my heart will stop. I cannot bear to see much pain but I would prefer myself that it would hurt a little; not a more docile method. Whether you care about the man or method, do either two statements ring true?