'A friend of mine has never got over the guilt of knowing that her parents only got married because they had a child'
My DP is in this situation too Driver. His parents got pregnant with him and got married because of keeping up appearances etc. They openly loathe each other and have done for decades by all accounts, but are still 'together'. Poor DP is 40 years old but still feel tremendous guilt for moving away and living his own life, and feels a huge obligation to make his parents happy.
'My own parents brought us up in an uber functional-yet emotionally-void family life'
This was my family too Handywoman. It's terrifying how badly it messes you up. My siblings and I have all been in abusive relationships, all had alcohol problems, brother has had serious drug problems, all had financial problems. I have been in therapy for several years and am definitely moving towards the light, but still have a long way to go.
I think if my parents had split up when we were kids, as upsetting as it would have been, it would have been such a relief to see them taking responsibility for their own happiness and their own lives, instead of relying on us three to provide happiness and meaning to their lives.
'But at the end of they day it gets you nowhere to blame your parents.'
Well, there's some truth to that, but you have every right to feel angry / let down / sad / whatever you feel about your parents and they way they handled things.