Unfortunately, thatt’s a question only you can answer. But goes without saying for any job.

Ask yourself:

• Will you be able to sleep peacefully at night knowing what job you’re doing and who you’re doing it for?
• Are your morals stronger then job security you’re getting?
• Can you stay on the job and inact change from within?
• Can you refuse certain tasks you don’t feel conformable with?
• Can you steer / influence the work that you and/or the agency does?

Duh. Same goes for Steam games and most of digital content.

If you want to keep it, there’s usually always an option to sail the high seas.

No. They don’t and they wouldn’t.

In all seriousness, I think I’ve seen ‘Mx’ used in this context.

Usually though, you’d go with a generic greeting such as ‘Dear Sir or Madam’ or ‘To whom it may concern’.