Venus is an incrediblely unfriendly and difficult place to live in:

First of all, it is the most volcanic planet in our solar system.

Second of all, it is unbelievably hot: the clouds are in constant formation, and the greenhouse effect takes place to an extreme level.

Third of all, the atmosphere is made up of sulpher dioxide and carbon dioxide. No pure oxygen at all.

And if that doesn't finish you off, the atmospheric pressure is so monstrous that if you were to suddenly arrive on the surface of this planet, you would implode before you suffocated.