This is a good question as it's something I haven't really considered much before.
I definitely don't like it when they start babbling about their husbands, boyfriends and brats as it spoils the illusion for me.
Had one skanker years ago who blathered on about her boyfriend who had just been released from prison, and she said he would sort anybody out who hurt her. What made this even worse was that she was an 'escort' paying me a home visit when she was telling me this rather than a parlour girl. I reckon the agency had picked her up from the streets judging by the state of her.
Even before that in my very early days of punting a parlour girl wouldn't let me go down on her as she said she saved that for her boyfriend! - of course this was in the days before I knew kissing was available; I assume that would have been saved for her bf too.
Only last year the rubbish Rebecca of Max's Angels who I saw last summer babbled on about her baby, which contributed to making a poor punt even worse.
When I think about it virtually all the best girls I've seen have been childless and, as far as I was aware, boyfriendless, at least that's what they told me or at least they didn't talk about them. Of course I have no way of knowing whether they were telling the truth, but it must be more than coincidence that these have been the better performers.
I wonder if there's less holding back when they aren't in a relationship?
Thinking back I did see one - Alicia of Minx agency who is well up my top twenty - who performed superbly despite telling me she had a bloke and a brat.