Duryodhana is gambling with the Pandava (Yudhisthira), and you are in ecstasy of joy that he is winning. It is such success that begets war which (finally) ends in the destruction of men.
दुर्योधनो ग्लहते पाण्डवेन प्रियायसे त्वं जयतीति तच्च। अतिनर्मा जायते सम्प्रहारो यतो विनाशः समुपैति पुंसाम्॥