Final answer:
The cosmic censorship hypothesis is believed because it aligns with our understanding of the universe's fine-tuning at critical density and is supported by active scientific experimentation, though direct evidence is yet to be found.
Step-by-step explanation:
The cosmic censorship hypothesis might be believed because it aligns with observations and theoretical frameworks in our understanding of the universe's initial conditions and behavior. One reason it is considered is due to the fine-tuning of the universe's density being precisely at the critical density, which has led to the universe's large-scale structure and the formation of galaxies.
Additional support for the cosmic censorship hypothesis comes from the fact that scientists are actively designing experiments to test this idea, although direct evidence remains elusive. This pursuit reflects an ongoing effort to explain key cosmological phenomena, including the cosmic microwave background (CMB) and the transparent state of the universe after photon-electron scattering decreased and neutral atoms formed.