I hope you felt quite bad about yourself 'harmlesschap. ^' Sounds like you made your other half very upset and worried. I gather you apologised to her on your return?
I don't remember exactly what happened after to be honest.
The background to that row was that she was suffering from PND, and had been for a year; she was back at work part time, medication and counselling was helping but raging anger was also a common symptom. That day she wanted a lightening conductor, I got home from work, walked in through the door and before my coat was off she was laying into me, nothing terribly rational and not an uncommon occurrence.
At that point home was no longer a comfortable place to be and while I tried as best as I could to be supportive of her in her illness there were times I simply couldn't cope with it and there was fuck all support for the partners of women with PND at that time I have no idea if that has changed.
I took the verbal abuse for about 10 minutes tried to calm the situation but she wasn't having any of it. In the end I said something along the lines of I dread coming home these days. Grabbed my coat and car keys and drove off. I drove to the coast and back, there was no way I was going to continue being ranted at while I driving as I'd both had enough and it would have been highly unsafe.
Anyway that was about 15 years ago and our relationship has never really recovered from her illness. It was never my intention to be gone for good simply to put some space between me and her rage but I do wonder sometimes if it might have been better for everyone if I hadn't come back that night.