system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is AC better than DC ?
gpt
The main benefit is that you can easily change voltages/amps with AC using a transformer.

Voltage and Current have inverse relationship, but power used/lost depends mostly on current, so being able to transport it as a very high voltage, and very low current means you can use much smaller wires, which cost a LOT less when your talking about miles and miles.  Then substations you transform it to medium voltage, then low voltage at all your houses, and businesses etc. 

With DC switching between voltages takes much more complex equipment thats more likely to fail, AC only takes some wires rapped around a bar of iron, so its relatively cheap, and unlikely to fail.


Source EE working in power distribution.