well for explaining for why masses attract, if you look at the hydrophobic force - basically why water will form "droplets" on a greasy surfce, like water proof clothing, polar atoms (like water) tend to group with other polar atoms, and non polar with non polar - therefore masses attract because, like polar atoms, mass wants to tend towards other masses.
Also your FE world is hardly simple, WHY is the earth moving up the ways? How does the sun magically float above us, and how does it give out so much energy being the size that it is? (there is also things like the corealis effect on pendullii, etc)