My mental image of finance was "bros a'broing", but the reality of the experience was professionals who were fully attuned to the reality of dealing with billions of dollars, and no delusions about how a few lines of javascript will change the world.
Whereas when I went to Google, I was met with a mix of "you're changing the world, selling eyeballs to advertisers" and "It's so great, we get to dress like we're 12 and play like we're 12".
Or the long since pivoted startup I interviewed who was doing their best to break the internet through awful PDF readers while in the office, everyone was ziplining and pogo-sticking around. (I await the mod slap for speaking ill of a YC company).