Were you looking for work when FB approached you either time? If so, why would you take yourself out of the running given you’re (I’m assuming) an experienced developer?
Some value ethics and social implications of their doings more than compensation. I had passed interview at Facebook and didn't join, because it seemed like not a good idea to work on ads and manipulation of masses without clear alternative business plan that would actually also do good in the world.
“I want to stress the importance of being young and technical. Young people are just smarter.”
-- Mark Zuckerberg
The interesting thing to me is that Facebook is primarily used by older people (over 40) who are not represented in the coding and ui decisions. Their inability to get a handle on political speech is evidence to me of this. Their employees lack real world experience and wisdom.
I was looking for work, but Facebook is notoriously ageist. I wasn't going to waste my time going to an interview where I would certainly be eliminated because of my age.
To avoid going through the grueling day-long interview/whiteboard session, when it was obvious to everyone in the room that you weren't getting the job from the moment you walked in.
I’ve had FB bugging me off and on and I can’t get rid of them. If I were desperate and they were my only suitor I guess I would do what I had to, but I honestly have no desire to work for them.