Meta Developer interview questions

I applied through a referral from a former employee. The entire process took about a month. I had one phone screen, then a day of on-site interviews with four people. The interview process was good overall, mostly just the usual questions on coding, algorithms, past projects. The recruiter was helpful and communicative.

Everyone was edgy when I started seeing people at Facebook, including the receptionists. Granted, job interviews tend to be critical, and we are the people who seemed to be begging for the highly-lucrative job positions. Then I saw this lady, who gave no self-introduction, no facial interaction, had only super-sharp look or pretended to be, who led me through these cold stairs, picked up a drink, and up to this tiny room, then started asking me questions. God bless her, turned out she was a software engineer, and may be the domain expert in my field. OK, so let's move on to programming, by which time I became edgy, too, knowing this lady sitting right behind me, feeling her freezing eyes examining up and down my neck, maybe my hair, too (I am a man). Did she notice my white hair as well? Anyway, the interview was quick (less than an hour), and I was let go. I knew there won't be any followup. Even if it does, am I willing to experience it again? What a fast way to ruin a day-off.