I'm not sure if it's the fact that I've never been married (or close to it) or that I'm still young (although...damn...I'm sure not as young as I once was) but the term hobby husband makes me gag. And I have a strong sense that if I were to use that term to describe the men that I've become closest to through hobbying that I'd be scaring them away (although that could simply be a fear). So I don't really have anything to add to the discussion of defining the term.
BUT the reason I piped-up was to thank Space and a few others for valuing providers as women and women as people. When hobbyists speak their opinions on how we providers are good fuck-material but bad marriage-material, it's disrespectful. And marginalizing. And objectifying. So I embrace my high sex drive and openness about sex, what of it? I found out at a young(er) age that I could get paid to find sexually interesting, respectful, and attractive men. Some men applaud me for embracing my inner capitalist and tending to my inner slut and I like those men. Oh, and for the record...those men are much, much better lovers. And for the men who don't value the women that they are paying for sex, I sure hope you save a bit of your cash for traditional therapy.