There is no real need to eat, as we breathe in our nourishment. The astral body absorbs everything it needs for its health and well-being from its surroundings. There is no need for sex, of course, as there is no pregnancy in spirit. Still, sex as well as eating can be enjoyed in the astral planes by those who made it a major part of their lives while on Earth. Eventually there will be more important things to do.
Astral worlds are typically clean, pure and well organized.
All planets are inhabited and have ample lakes, rivers, and oscans. There are no pests or predators. Climate is always spring like with occasional prezipitation in the form of glowing snowflakes or multicolored, shiny raindrops. Worlds in the middle astral planes are shared by new arrivals from Earth, goblins, animals, fish, nature spirits, giants and spirit beings. The environment glistens.