Well, she has had two - two!- world-class careers. OK, the solo singing bit wasn't all that, but come on, the Spice Girls were pretty big. Her achievements on that front are quite impressive.
She seems like a good Mum.
She has a fabulous wardrobe.
Her children are nice looking, if that is important. I had a DD a few months before Harper was born and she is a peaches-and-cream doe-eyed, ringletted mass, and as such Harper's cuteness hasn't really registered on my radar. Having said that, it doesn't really count a load of Mums coming on to say their children are cuter - we would say that! 
Put 'em up for scrutiny by the ruthless disinterested public - as we are, commenting on her kids - and see what the reaction is...
As for lots of Mumsnetters putting up with cheating husbands and taking them back, just like VB. None of us have Brand to think about, do we? Any MNers patching their marriages up are doing so because both parties presumably want to, not because they have to.
Rather than having a shared, mutual interest in working through troubles together purely for the benefit of the relationship and the family, Victoria has traditionally had a HUGE vested interest in maintaining the Brand Bechkam image. If the family disintegrates, so does the brand, and therefore so does the income and the root cause of their fame.
However, now that her star is back on the rise and his on the wain, it will be interesting to see how things pan out. Something tells me she won't be behaving like him and having a load of shady encounters. Whereas he will probably only have more. Lots more, to feed his ego.
There's lots about her lifestyle that is arguably enviable. But a lot that absolutely isn't as well.
VB threads do go a bit pear shaped generally.