I'm another one stuck here. Broke up with my ex when he was on a temp visa, he was extremely abusive. I am not allowed to leave with my child. I can't even go on holiday. My parents are not getting any younger and will soon be too old to make the flight here, so I am very conscious that I may never see them again. My child misses out on doting grandparents, aunts, uncles and cousins. Thank heavens for the internet.
My ex had been in the country a year when we escaped with nothing but our clothes and some spare nappies. I was able to prove the violence but the courts here do not consider that to be much of an issue it seems when it comes to custody. The court system is horribly expensive and takes years. As was pointed out, you can't rely on child support here and a huge proportion either underpay or don't pay at all (I read 50% I think somewhere else). I have also found that the police attitude towards domestic situations is very dated, to say the least.
I could say I wish I read this thread a few years ago but the reality is, I didn't think it would happen to me. I will make the best of my situation because it is better than the alternative but somewhere that seems idyllic can seem like a prison. I think it is well worth checking the legal options before getting on the plane, and if you're considering starting a family, at least wait a while after you arrive to see how you feel after the honeymoon period is over.