opening myself to ridicule here.
When young, studying physics on my own, I thought through concepts I was studying regarding gravity, the Michelson-Morley experiment, etc. I noticed that the MM experiment to detect luminiferous ether was conducted in only one plane...horizontal. With a bit more thought, I realized that if LE were to be detected, it would have to be detected horizontally. With still more thought, I tentatively concluded that gravity is LE ‘falling’ to earth (to any mass, actually, but that which is ‘falling’ to earth is ‘pushing’ smaller things like me towards the earth). Reading on other experiments like those demonstrating the Mossbauer effect gave me support for my thoughts.
(I even built my own MM interferometer to play around w/ my ideas)
I still wish I could discuss this with someone willing & knowledgeable.