The places I have found online to talk about BPD have often been very discouraging. I do not want to leave my wife. I know what I signed up for. I said "for better or for worse," and I really, truly meant it. I still mean it.
I'm just looking for people who might help me on that road.
Nobody here tells people to leave or stay. This is a decision only you can make. What I will tell you is that- even if your wife didn't have BPD, being a carergiver to a spouse, parenting on your own, and supporting the family can lead to burnout. It's not that you aren't capable and strong. You are human.
They say on an airplane- put your oxygen mask on first. Because we all need our own supply of oxygen in order to be able to help someone else.
You say you are doing this for your kids and I believe you, but your kids also need you to be there for them phyisically and emotionally.
I know this as an adult child of a severely affected mother with BPD. Like you, my father "did it all" but he also was human. He did the best anyone could do with this situation but my BPD mother took a lot of his time, energy and attention.
My best advice to you is to get some help- however you can manage- or afford. Fortunately my BPD mother did accept household help. I know some people don't want it but this isn't a choice. It's a necessity for you. She was reluctant to get home help for my father when he eventually needed it in his elder years. I think this was because of the need to "pretend all is normal" and home health may have discovered it wasn't. But I believe some help, however, you can do it, is important so that you have some respite from being a caregiver. Even if your wife didn't have BPD that advice would be the same. Caregiver burn out exists.
It is OK for your children to be cared for sometimes by someone else if they are safe and reliable. We had other people take care of us when we were younger. Other people can be emotionally stable role models too. However you can work this out- with a relative, a paid sitter, day care, preschool, day camps, after school care, whatever resources you can manage.
It's OK to have someone come in to clean the house if it's possible for you. Or to pick up some meals to go, or to send the laundry out instead of doing it all. Even a little bit of this help- what could be affordable- is a help.
What resources are available for your wife? Is she eligible for social security disability? Medicaid? Home health services? You can speak to her physician confidentially and if she won't let you, speak to yours. Yours will tell you the same thing. Your kids and your wife depend on you to take care of yourself so you can be at your best for you and for them.
I understand the "pretend all is normal" however, you also have to have someone to speak to openly for support. You would benefit from counseling. It is a confidential situation. Your medical provider can recommend someone for you.