The most common reason. Players find amusement in disrupting the experience for dozens of others.
Rivalries between server communities can lead to "raids" where crasher dupes are used to drive players away from a specific IP. gmod server crasher dupe
Many crashes happen because a player spawns a massive dupe multiple times in a row. Setting a "spawn cooldown" or a maximum "total prop count" for dupes can mitigate this risk significantly. 4. Staff Vigilance The most common reason