Why people dislike global variables so much while I find them so convenient?

[rempas]

On Wednesday, 26 January 2022 at 15:47:06 UTC, Bienlein wrote:
> I once worked on a system (written in Java) that was a huge 
> commercial success. The company has a revenue of about €100 
> million from it. What later turned out should always have been 
> passed on to methods as a parameter was always a global 
> function. Now many person years have been spent on development 
> and countless lines have been written and there is absolutely 
> no way to fix this as the effort in time and money is way to 
> large. For some little programs you might get away with some 
> globals, but not in case of lage systems.

Thanks for the example! I must say that I didn't though about big 
projects that will be shared across a lot of developers. 
Thankfully, thanks to all these replays, I have learned my lesson!