Server owners often try to rake in some money from their server community to pay for upkeep costs and make it worth running.

Modders, too, deserve to be paid for their work. A lot of modders just do things for hobby due to just wanting to do something themselves and yet people still use what they put out and act as entitled as if they paid $60 for it, just exploiting the generous nature of someone's passion project. May as well stop letting it just go for free, mods take a lot of time and effort to make.