I guess its different if you have special needs kids. My kids go once a year for a check up and twice yearly for a dental cleaning. No biggie.
We both cook and my teen is learning to cook. I can't imagine someone not knowing how to cook as its a life skill. Too bad your husband didn't learn.
If something happened to me my husband would be at a loss with passwords and stuff as I do most of the bill paying. I have a spreadsheet with it all written up but who knows if he will remember will to find it!
Again I thin kthere is a huge difference between SAHP and SAHW. The OP is a SAHW not a SAHP.
I blame my MIL. She did EVERYTHING for her kids for WAY too long. They never were taught basic skills like laundry, cleaning, and cooking. My own 13 year old autistic son has better cooking and cleaning skills than my husband. I bet he would take over for me, actually.

I mean, my husband isn't an idiot. He is a highly successful military officer. He has incredible survival and improvisational skills. He wouldn't curl up and die without me, but it would be a steep learning curve.