Consider this statement:
You need to talk to your partner. You are in this together and you can figure it out. I understand about the cats but rehoming your cats isn't as catastrophic for your family as your death - not by a long long way. The life insurance isn't a substitute for having your around. If you have to declare bankruptcy, then you do - and you will pick up and recover. It isn't the end of the world even though it feels like it right now.
You need to see a doctor about your depression and get some advice on the debt front. Many many many successful business owners have bankruptcy in their past - it is a very common thing. You are not a failure and you can come back from this. Don't think about suicide as an option.
What's the meaning of front in "debt front"?