I'm almost in the same situation.
My dad is a banker at a top bank and would be willing to sub me into his team/somewhere in the bank or his contacts so that I start earning quite big money, even though I don't have the right qualifications. I however know how much travelling, negotiating, computer-staring, etc is involved - or, as you aptly put it, 'soul-destroying'.
I've decided to pursue a degree in Geography because once I'm done I can go into anything - journalism to marketing to whatnot. Basically, jobs that I love and involve out-of-office work rather than being in front of a computer the whole day.
Having had this experience, I'd say follow your heart - on one hand if you keep this corporate job you'll be better off in the future and perhaps can afford to, say, in 10 years time, move to a job which suits your personality better?
However on the other hand, if money plays a big role in your life as well as meeting rich women, then I wouldn't be choosing a job with half the pay...
hope I've provided some food for thought!