I went back casual when DD1 was 7 months, not for long though and then we moved. I go back to full time work in just over a week. DD1 is now 2.5 and DD2 just under 11 months. I don't want to. But My earnings are more then DP's plus he can only get casual work which stops when the schools are on holiday, and mine is a more secure position with a fixed rate and penalties. I don't want to go back, but have no choice really.