[empath75]

People frequently do things that they don't want to do or didn't plan to do -- most notably drug addicts and alcoholics.

[kazinator]

Note that regret isn't the same thing as "my hand moved without any intent from me, WTF?".

[friedman23]

>my hand moved without any intent from me, WTF?

This is how addiction actually manifests. Put an alcoholic in front of a glass of whisky and often they will grab and attempt to drink without conscious thought.

[empath75]

But that also happens quite frequently and people rationalize it. Do you make a conscious decision to put your hand in front of your face when someone throws something at you?

[istjohn]

The term for that is akrasia.