it's practically always the case that you use a try-catch for more than just one source / line of code. I mean except for database/network calls I don't think I even remember a single case where I ever used a try-catch just for a single line of code. The subtle problems come from errors handling via values. You check but do you check perfectly? What happens when APIs change and the underlying functions add more error cases, then you constantly have more work to do. Nonstop constant error checking that you don't care about. This is exactly where humans are terrible: Really important work that is drudgery and where if you ever mess up once, you fail in very painful ways. Exception handling solves all of this, it fits how humans should be working and it fits the underlying hardware reality as well: We are big picture, we should not be designing languages for describing logic that force us to do drudgery work constantly and care about implementation details of every single thing we call.