Code that you reinvent/maintain yourself is almost always less actively maintained than the dependency you could have used. Less maintained code universally me

Code that you reinvent/maintain yourself is almost always less actively maintained than the dependency you could have used. Less maintained code universally means more buggy code. (not even talking about performance and features) It all boils down to human resources. Also your saved human resources by using a dependency can be reallocated either at bettering the rest of your code or towards contributing to the dependency. Regarding security issues in C++ in general: ~51% of security issues are memory related, so you get at least half less security issues with a garbage collected language.