Who/What was Tom Bombadil

Tom Bombadil was the first in middle earth, not the first in creation. he might be an elf. the only problem is elves weren't created when he was. he takes the description of a dwarf or maybe a hobbit. but we know that he wasn't either of those. so we have to conclude that he was a screw up. he was probably the first elf ever made, and Eru didn't like him, so he discarded him. Tom probably went off into the forest, found a nice place to live, and never grew older, (much like the elves). he didn't here of any other life until he ran into it in his own forest. when he found the being he was surprised and realized he wasn't alone, and adapted. time is endless for Tom, and he is probably as powerful as the Valor. This is why he was a screw up, the Valor didn't want a race of super beings, so the said something like "let him go and live on his own," and thats what he did.