Although this isn't the same in all disciplines, in those that have significant fieldwork components, graduate school can offer some amazing experiences for you

Although this isn't the same in all disciplines, in those that have significant fieldwork components, graduate school can offer some amazing experiences for young people that are difficult (though certainly not impossible) to get elsewhere. I did my MS and PhD in geology/geophysics and did a good amount of fieldwork, including 8 international field campaigns in places like the Lesser Antilles and Tibet. It's a cool experience to be 23 and send to Nicaragua with a ton of scientific equipment and run small team for a month or two. There are aspects of it that are like tourism, but you go off the backpacker circuit more and interact with the locals, and actually have inescapable intellectual challenges and responsibilities. It's also a bit less heavy than the Peace Corps. This is pretty common in the earth sciences, although not required. Lots of people in the social sciences have analogous opportunities. In any case, I think that the overall discussion in the article and in the comments here provide a good range of possible experiences and considerations. But I just wanted to add my piece because it hasn't been mentioned, and it was what really tipped the scales on going to grad school for me. And that was, for me, a great decision. I'd also add that anyone with an interest in both earth science and coding will find that if they really learn the 'earth' part of the sciences, there are very many opportunities to use relatively simple computations to make advances that a lot of the field scientists haven't worked through yet, and lots of industry opportunities if you're into that as well.