system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why can it rain for so long? Why can't the rain just fall down all at once?
gpt
Clouds are tiny suspended water particles, so small they're light enough to be vapor. In the right conditions enough of those particles accumulate that they become liquid (condensation). At that point they're too heavy to stay suspended in air, so they fall.

There's not really any way clouds would have the opportunity to condense into larger bodies of water than droplets without those droplets falling first. There's no opportunity for them to accumulate. As long as the conditions that allow condensation persist, the clouds will continue to release them in droplets.