[fsk]

Answer: There is some neat stuff happening at Google, but the typical employee is doing the boring maintenance that any large business requires. As a bonus insult, they're ridiculously overqualified for grunt work and they didn't think that was what they signed up for.

For a typical software engineer at Google, it's like being a janitor at NASA. Some neat stuff is happening there, but you aren't a part of it.

Also, if you have a couple of years at Google or Facebook, future employers/investors will automatically assume you're qualified, even if you aren't. That opens lots of opportunities. It's also a big contrast from what a typical software engineer sees, where they're asked FizzBuzz on every job interview.