I mean, it brought us things like cars, microchips, skyscrapers, electricity, antibiotics, vaccines and much more if you think about it. Ask any engineer who designs those things (based on the scientific method that also tells that the earth is round) they will all say the same thing. And the things those engineers design work, you can see it every day! In fact the very micro chips you use to operate these forums are based on very highly developed physics, they are cut using light with wave length more then twice as wide as the chips.
I bet no one posting here has been into space himself, me neither.
But it is so very easy to see the evidence for a round earth with your own eyes. Fly with an airplane, visit the local weather modeling computer, visit a foucault pendulum, build one yourself (requires pretty accurate engineering parts though), buy a telescope and view the ISS. There are many very easily DIY replicable physical experiments to replicate the experiments to prove the underlying theories, we are talking 18th and 19th century physics here. Modern telescopes for a few hundred bucks are probably more accurate then what Copernicus and Kepler used, with a little careful fiddling you should be able to see the planetary movement yourself (just calculate the parallax). For about 2000 bucks you can fly around the world. Or sail with a boat and see the top of ships on the horizon appear first.