Thanks, I think I have my answer. It's legal for a woman to take everything a man has owned for 20 years (including basic necessities).
What you aren't understanding is that there was no CRIME. She won't get arrested, she won't get prosecuted, she won't go to prison. Though I'm sure that you would like that.
Your son does have rights to a property division (or equivalent dollar value) based on South Carolina divorce laws.
But
HE will need to file for divorce and exert those rights in court.
I emphasize
HE because you have no part in any of this (other than giving him emotional support and maybe money for an attorney and/or furniture). He's an adult. This is his business.
As for his "situational" depression, well, I went through it during my divorce, big time, yet I kept working and pulled myself together enough to make it to court to preserve my rights. I have to agree with those who say (or imply) that he has to "man up" and take care of business.