Security firms like Malwarebytes and Kaspersky consistently list "cracked game engines" among the top vectors for consumer malware infections.
Legitimate copies (especially those distributed via Steam) have access to the Workshop, where thousands of free graphics, music packs, and script add-ons are available. A cracked version isolates you from the community that makes RPG Maker powerful. RPG Maker VX ACE 1.01a -Already Cracked-