The whole point to parenting is raising children who grow up to be well adjusted adults (or as well adjusted as possible).
Some experts argue no person ever grows up perfectly adjusted and all people have some trauma or issues with their childhood.
I feel this way at times, because try as hard as I might, my children will still tell me things that make me question whether I'm doing a good job or not. For e.g. one child recently told me they're depressed and it's because we (the parents) raised them that way... i.e. being depressed ourselves made our children depressed. I've always believed depression is genetic though the concept of nature vs nurture is not lost on me.
However, the constant that keeps me believing I'm doing ok is how my eldest child has turned out.