When an emergency happens and all hams jump on the air. Your ability to tune your ear and listen to important messages is critical. DX contests are generally very busy. It is a challenge to pick certain operators in a pile up. Thus a great opportunity to a) see how far your station setup can get you and b) to advance your listening skills by writing down callsigns, RST reports and locations, messages that operators from around the world exchange.
The 20 and 40 meter bands are crazy active today. Your antenna setup (whatever that may be) won't stop you from hearing stations, don't hesitate. Tune in and have fun!