Yes, I like listening to other people sing, especially when my friends sing at karaoke. It feels more real than just listening to music on my phone, and sometimes it makes me happy.
It depends. If the person sings well, I enjoy it, but if they sing badly, it can be a bit awkward. Also, sometimes I just want some quiet instead of music.
No, I don't really like listening to people sing. I prefer just listening to music without words, like piano music. Sometimes live singing is too loud for me.