system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How would modernizing infrastructure help us?

I'm curious to hear from somebody who knows this kind of stuff

Im guessing it makes us safer, gives 'right now' jobs for awhile. It would save energy (the electrical grid waste something like half of all electricity produced, that's a lot of waste).
gpt
you pretty much answered it yourself. the national infrastructure is composed of lots of different parts though. road networks, fibre optic internet, train tracks, etc etc. a better infrastructure makes for a more efficient country, with less waste. and improving things can create shortterm jobs, while maintenance of the infrastructure already provides longterm jobs.