I have anger issues that I went to counseling for. I saw a therapist because I threatened to kill my parents in detail with a notebook describing my action. I obviously didn't carry out with that plan, and I'm glad I didn't; so to answer your question, yes. Most people have family problems, it's a very common occurrence.
Yes, almost everyone should have. Without going into details, there was a near-divorce, my parents almost killed themselves and a lot of my family, and when I say family, I'm including aunts, uncles, cousins, etc. hated themselves.