Currently experiencing this at my current place of work. Instead of picking a popular React component framework (though the smaller ones would probably be considered libraries), i'm now stuck creating basic stuff, like new components for tabs and whatnot. That's even more fun when you have coworkers that enjoy lengthy discussions about the implementation (which isn't necessarily a bad thing) in combination with clients that want things done ASAP (which is a bad combination).

On the other hand, there are certain other projects which use frameworks like AngularJS which were essentially dropped and are now in the process of dying out - maintaining solutions written with AngularJS isn't fun either and also wastes time sometimes, especially when new components or other libraries can't be integrated with it easily (no pre-existing integrations for modern stuff exist and our own ones need to be written).

Of course, that's just in regards to the front end development - when talking about back end development, i'd err on the side of caution. Working without a pre-existing framework would mean having to write your own security code and that's generarlly regarded as a very bad and dangerous decision based on what i've heard:

- https://youtu.be/4qN3JBGd1g8?t=2371

- https://speakerdeck.com/eoinwoods/secure-by-design-security-...