Good question. I do now, he's always bugging me when I'm trying to relax in my room, always wanting to look at youtube videos with my laptop. He always talks about things I have no interest in like animated movies and video games -_- (he's 5 years older than me but he's like an annoying little brother, I like my quiet time)
Yep, my ex-wife.
Yep, I sure have! More than once actually!
I am sure pretty much everyone who is not an only child who then moved out on their own has. It is part of life.