Hi Melissa. I'm not sure what you mean by "use it as an excuse." We don't do anything without a reason. What Mate says, if I'm interpreting him correctly is other than our automatic limbic system everything we do is based on a thought process. It can be flawed, or based on wrong information, or for a crazy reason but it's still filtered by thought.
If our attachments in childhood are ill-formed we are lost. We attach ourselves to something that gives us what we need. That can be a lousy boyfriend who treats us badly, or we develop an attachment to junk food, or we soothe ourselves with alcohol. Can we say we're using our lack of attachment to loving relationships in babyhood and childhood as an excuse? I don't think we can use excuse here in the usual way we do.
If I reach for alcohol to soothe my hurting heart that's not an excuse. It's a deep seated longing for the attachment I didn't form with my parents. And this can be changed in that I can learn to attach in my adulthood to things that will give me what I need, instead of things that hurt me.
Look for a video on Depression by Professor Robert Sapolsky. (Edit: here's the link
http://www.youtube.com/watch?v=NOAgplgTxfc)
JMum