more practical - if I'm able to send 100 euros instantly to another person through fiat third parties, Bitcoin must do that. Lightning fixes this to some extent

feeless, or close to it - if I'm able to send 100 euros to someone with 0 fees associated, Bitcoin must do that. in this case it's acceptable if the fees are sub-cents, as they usually are in Lightning

right now, the Bitcoin network is slower and more expensive than traditional fiat institutions