Perhaps a better question would be "Why not?"
After all, humanity has had a permanent presence in Low-Earth Orbit for 20+ years, and there are legitimate efforts currently underway to extend our footprint to the Moon and even to Mars. So ... why not Venus?
In fact, the Venusian atmosphere may be the only non-Earth location in the solar system where humans may be able to exist on a long-term basis.
At 50km above the Venusian surface:
Gravity is ~1G (almost identical to Earth)
Radiation Protection is similar to Earth
Temperature is ~25° C / ~77° F
Pressure is ~1 ATM (almost identical to Earth)
Of course, there are downsides, including: the atmosphere is primarily carbon dioxide, and the clouds are mostly sulfuric acid. However, these obstacles can be overcome with breathing apparatus and acid-resistant materials.
So ... rather than live underground on the Moon or Mars and risk the unknown long-term effects of reduced gravity, why not live in a structure floating in the Venusian atmosphere?
The question may no longer be "why?" or "why not?, but rather "when?"