system
Given the following post, respond as if you're commenting on Reddit:
human
[Lovecraft] Why do eldritch horrors often tend to look organic?

With tentacles and stuff. I know that's not what they really are and not all of them look like that but it seems most of them look fleshy.
gpt
They're organic, but they aren't *just* organic.

C'Thulhu really is a man-dragon with bat wings and a squid face, but he's also an extra-dimensional entity that experiences reality on levels we cannot comprehend.

He has a real skull that contains a real brain, but when that skull is cracked open, the otherness of his biology stitches it back together, and he takes a century or two to sleep it off.

More abstract entities, like Azathoth, may not have physical forms at all, so their writhing mass of tendrils and eyeballs is probably more a facet of what their psychic emanations do to our mind. When the Blind Idiot God who can See All and Reach Everywhere knocks on the door to your conscious, your mind interprets that as "galaxy-long tentacles and a million, million eyes." 

And then your brain packs its bags and heads out for a permanent vacation.