IMO the problem I had in both my long term relationships in Australia was the fact both were high maintenance. I got to the stage I just could not be bothered with all the s##t I kept getting, which got worse with time. 28 years ( married ) and 16 years ( defacto ) so it's not as if I was a quitter. If I had not had the mental baggage of duty and responsibility, I probably would have ended both in a couple of months. Maybe longer with the defacto, at least she was good in bed. Both screwed me out of half my assets.
About 8 years with my Thai GF now, she is not high maintenance, and does things for me a Western woman simply would not do. We would average one argument every six months, usually miscommunication or cultural differences. Done and dusted after an hour, no sulking.
I walked out on both, with relief. Enjoyed freedom again.