Rockets

Aerospace engineer here, i know this is supposed to be a joke. Just wanted to tell you why they dont do this (besides for the joke). The nose of a rocket creates a shock wave that absorbs a large portion of the heat and energy create during ascent and entry. If it wasn't for this, aka, we made the nose sharp, or had a Hatch to come out (which would weaken the rocket structurally), there's a good chance the rocket would just burn up during the launch or return.

The shape of a rocket nose was classified information for a really really long time bcz sharper shapes are more aerodynamic, so that's the shape people thought we needed to use. But, once you reach speeds where shock waves are significant, and heat is a huge issue, that no longer works. So, we blunt the rocket nose.

TLDR, it's a heat thing.