Just now, i'm sitting nearby my computers and don't listen to anything, because i don't like that background noise what computer ventilation is making. Sometimes i even think, how to shut down these small noises coming from outside of my house (you'll listen to music and voila', something new in recording, but no it's just outside sound mixed very musically with sound coming from headphones...). Yes i use my phones, when i'm editing some recordings in my computer, anyway.
Actually i change all my earphones during different listening sessions (but i leave Shure 530 for listening during activities).