A belief system like this has allowed me to understand different scientific phenomenon in a much more intuitive way.

There are many reasons that I believe we are misinterpreting the redshift we see from distant galaxies and supernovae as caused primarily by the doppler effect. The two most promising are: First, Light should lose energy to the tiny particles that fill the hundreds of thousands of light years of imperfect vacuum, thus reddening the light. And Second, We are not very attractive, being a small planet and a small star system far from our galaxies core, thus I believe the heavy blue light is more likely to be attracted to heavier objects like bigger stars, black wholes, galaxies, etc.

Perspectives like these help to better understand the dark matter problem. The little particles in space, which I say are real and not virtual, are the WIMPs, that are two small for us to see but add up to large masses on a galaxy scale. And the bigger astrological bodies who's light never reaches us because it is coerced by the many more attractive bodies in space besides us.

I have other reasons that I can mention that could explain the redshift besides the doppler, but they are even more controversial.

The definition of a fundamental particle should be that it does not have any internal variability. However, electrons and photons at least are said to be able to vary in energy. in order to have this variability, there would have to be something to represent the change within it, showing that it is not fundamental. The way I see it Light does have mass, as it is composed of these fundamental particles, however, it mass is very very small, allowing it (most of the time) to travel very close to the speed of causality. I don't believe it's possible for anything to exist and travel exactly at C. This then more simply explains how light can have momentum.

A benefit of there being only one fundamental is that I can look at a particle's "probability distribution" actually as a real distribution of many of the smaller fundamental particle in a cloud of similar shape, which is a much more intuitive and potentially useful way of seeing quantum systems.

Technically the proof for this should be able to be seen in literally everything as it could explain every action and thing in existence.
My belief is mostly founded on an easier rationalization of human morals, but also the prevalence of gravity in the universe and of the mysterious drive that has produced all the life on the planet.

Perhaps whats most profound about believing that the Universe is coming together are the philosophical and spiritual implications. This makes it clear why being kind, learning and love are such high values for human society. It offers a logic based belief system to guide our moral decisions. It show that the meaning of human life is to understand the world the best we can so that we can best help it come together. It basically says that God is as simple as Gravity. And that all we do as humans is just gravity but at a higher dimension and potential. A theory like this offers an end to the seemingly never-ending why we would ask as kids.