Earphones or headphones for gaming?

Do you prefer to use earphones over headphones while playing video games? If so, what are the reasons for it?

I once tried earphones while gaming and it was a terrible experience. They were constantly falling and the audio wasn't that good as the audio coming from my headphones. Well, there are people who still prefer earphones. One reason which I can think of why is that the audio being separated helps some people in games like CS:GO to hear the enemy better.