How do Hindus treat the rig-veda?

Different Hindus will give you different answers. I treat them with reverence; as important texts with origins arguably dating before any other world scriptures, and which were instrumental in the development of my religion (and quite possibly many other religions).

Honestly, I can get more meaning and insight out of the Upanishads most times than out of much of the Vedas, but that could just be where I'm at now.