My point is "it's too much of a hassle". Majority of people including myself, just wanna plug and play. I tested oratory1990's EQ harman target. Does it sound good afterwards? Yes. But stock tuning sounds good to my ears as well. There're different, but not for the worse or better. OP asked why people chose not to use EQ. That's my answer. I'm happy with my iem's stock sound signature.