The biggest thing to worry about, IMO, if you're just working on your own on hobby projects is long-term maintainability. This gets down to tooling, which can b

The biggest thing to worry about, IMO, if you're just working on your own on hobby projects is long-term maintainability. This gets down to tooling, which can be horrible over the long term. Tools get updated constantly, packages get updated constantly, breaking changes get made almost constantly. Five years from now, your packages probably won't work, and it will be almost impossible to work on a project -- unless you've been maintaining it over the past five years. If your product is your business, of course you're maintaining it. But if it's just a hobby you want to work on sometimes -- then you want to be able to abandon it and then come back later without the pain of figuring out why you can't compile your SCSS, javascript, or similar things.