Yup yup. I don't guard dps unless I'm ordered to on an op. If you are a dps you need to learn what to attack and how not to take excessive damage. If you are drawing agro on hard-hitting mobs you are doing it wrong.
Also if you do heals and you are not worried about catching too much agro then you simply are not healing enough, your area heals will generate life-threatening agro at times but they offer the best healing bang for the buck and you should use them often.
In Flashpoints, Healer never pull aggro from me. I always guard the DPS with the best gear.