I think many devs have that feeling... But often simple things have a very big effect - in my first job I made some simple scripts which imported data from machines into an ERP System. I also made some bigger projects with feature rich GUIs at my first job. The simple scripts probably sill import data every workday and automate a task previously made by humans since multiple years, some of the GUIs weren't even used…
From that p.o.v. your feature rich GUIs may be your biggest contribution to society, because that's really work based on your decisions.