Suppose you hear about a relative in your family whom you never actually met; perhaps they passed away before you were born. You hear about all the wonderful things they did, about how loving they were, their great accomplishments, some of which may have even benefited you and your family directly. Wouldn't it bring some sort of closure to actually know what the relative looked like? Wouldn't it bring things more into focus somehow? Sure, it would! It would help... at the very least, it would be the icing on the cake.
That's exactly what happened in my relationship with the Lord. All these years I had learned of His Omniscience, Omnipotence, and Omnipresence, and of His Love, but never had anything but vague notions of what physical form He might take; and let's face it -- as long as I'm residing in this here physical plane, the physical attributes of any entity are going to play a part in their overall being in my mind. Maybe it's the artist in me... I have to have visuals! :) Sure, I had the more depressing impressions of an old, bearded guy hell-bent on cursing me forever if I screwed up, but that doesn't line up with the teaching that He is Love (see aforementioned verse, as well as the comparison of artistic renderings of God I posted about here).
Concerning trying to maintain a close, loving relationship with God as a vague, formless entity, Lord Krishna even said it Himself:
"For those whose minds are attached to the unmanifested, impersonal feature of the Supreme, advancement is very troublesome. To make progress in that discipline is always difficult for those who are embodied." ~ Lord Krishna (Bhagavad Gita 12:5)
"Therefore, the bhakti-yogi accepts the Deity of Krishna as worshipable because there is some bodily conception fixed in the mind, which can thus be applied."Yeah... no kidding! I wish I had known this sooner, but the particular flavors of Christianity I was hanging with especially in more recent decades seemed to discourage such an approach for fear of "idolatry". Well, if this is idolatry, then so is the everyday family photograph or the picture of one's spouse hidden in their locket.
Besides, I'm pretty confident that a belief system which has been around far, far longer than Christianity (not to mention just about every other major religion) will know a thing or two about God's physical features, and it will be far closer to the truth than the angry (or at the very least, clinically depressed) "Santa" impressions of the West.