As a SAHM, I would willingly help friends in need; if they needed childcare due to illness or a midnight run to Casualty with one child, I would not hesitate to take their other children. Likewise, I have been on call for a friend to look after her two in the event she went into labour with her third before her parents had time to arrive.
But there are emergencies and emergencies.
A teachers' strike with weeks of notice does not constitute an emergency of the same magnitude as a midnight dash to casualty with a febrile baby.
Parents who work need to realise that there are costs to each choice; as a SAHM my costs are to my career, long term prospects, salary etc. As a WOHM, their costs are the very occasional day of lost salary due to strike.
As a SAHM, there are very few benefits we are actually alowed to articulate. God forbid the naive SAHM who dares to mention on MN the benefit of seeing their children grow up, or the resulting closeness they feel to their children having spent every day with them. Just watch the bunfight and the mocking accusations of being "precious moments mamas". The one thing SAHMs can legitimately lay claim to is having holiday, strikes, Inset days, illness covered. But not anymore. According to this thread, they should also, in the name of community and feminism, offer to look after WOHMs children too.
Yeah, right.