^^ Just that.
I've only recently joined mumsnet to be able to post but I've been 'lurking' for the better part of a year or so and every thread I've come across where 'step' children are involved are just awful to read.
Just because a child doesn't share the same DNA does that mean they are not entitled to a shred of decency?
They haven't asked to be put in this situation so why do so many mumsnet users see fit to treat them as second class citizens?