system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why commercial airliners don't use ejector seats?

If fighter jets use them, why don't we put them in commercial airplanes? And would they be safer than current safety measures?
gpt
Two reasons, mainly.

1. They're ridiculously heavy.  You're flying, you see.  Weight is the opposite of flying.

2. They're ridiculously expensive.  Would you pay an extra $10,000 per ticket?

More reasons than that, but those should cover the most important.