Jos, my husband also had what I would consider from the outside looking in a "good" childhood. His parents' marriage was intact, he didn't suffer trauma or abuse, nothing that would seem overtly negative. However, there is something there that is more emotional pain - lack of feeling validated, control issues, etc. Sounds like your husband's childhood may have been the same way. There doesn't have to be something major or overtly traumatic to cause the crisis (though that often is the case). There is just something from their childhoods that causes them to miss pieces in their emotional development and they fall to pieces in midlife and the damage falls on us.