And Cailin, I never said that you should feel nothing for your charges, as above I said I felt genuine heart-warm fondness for the kids I worked and work with. However, it always bothers me when people compare it to parenting. It's very different and if it isn't and professionals can't see that it is, that can be a major problem. I have seen colleagues be very judgemental of parents when the lines blur, when in reality they really don't know how they would cope in the same situation. On the flip side, I have seen a professional colleague, when faced with news of her own son's special needs, literally lose all knowledge of his condition when it came to him. She will tell you outright she cannot apply her professional knowledge to his condition, because she can't be objective and unemotional about it, and she finds herself doing all the things she has seen parents do over the years that she would once have advised against but she is helpless to stop herself.
To be honest, if people working with vulnerable kids find unable to switch off from it regularly and/or that those feelings intrude significantly into their home lives, they should be seeking an outlet e.g. for those of us in the NHS, it would be clinical supervision, I presume there is similar support in teaching?
I also wonder, as someone above said, if it's ever the logistics that makes babycare hard. I reckon it's generally the social and emotional factors, combined with personality, hormones, support levels etc that make the early days easier or harder.