You’ll miss out on the latest stems technology, cloud library access, and hardware mappings for new controllers [2].
VirtualDJ is professional software. Cracked versions often crash mid-set because they can't handle the real-time processing requirements [1].
If you aren't ready to buy, VirtualDJ is actually free for home use (non-commercial) on your computer without a controller [2]. It’s the best way to practice your transitions and learn the interface without risking your hardware.