In my experience, finance scumbags and startup scumbags are different breeds. Finance scumbags are greedy but honest. They believe themselves entitled to own $20 million apartments and will do whatever it takes to get them, but they don't pretend to be anything other than what they are. Startup/tech scumbags (because they're more accountable; Zynga's behavior would be unremarkable coming from Goldman) tend to be a bit better at disguising their intentions. They also tend to care more about power, social access and kingmaking, whereas finance scumbags are purely about money. In my opinion, that makes finance scumbags more respectable (or, I should say, less repulsive).
That said, I like technology a lot better. There are always going to be scumbags when there's money, but the difference (IME) is that: (1) there are more normal (non-scumbag) people in tech, probably 85% vs. 70%, (2) the normal people in tech are more interesting and creative, whereas decent people in finance tend to be boring, 9-to-5 types, and (3) technology has a small but sizable number of people who are decent and have entered the upper ranks, whereas there's a glass ceiling that non-scumbags experience in finance (unless they start their own trading firms).
I didn't move from finance to technology with the illusion that I'd never have to deal with another asshat. I moved because in technology, it's much more likely that I can succeed (a) in a creative way, and (b) without becoming a scumbag myself.