What do you think of this situation?

At my old job almost every other week there was a party. We all had to bring enough junk food for around 20 people. The two tables were packed with cake, chips, dip, cookies, pie and more. I was struggling to lose a pound. I couldn’t help but nibble at the food because it was right next to me. It was terrible and I was frustrated. Even though I didn’t eat too much of it I still was gaining weight. I think the constant parties and amount of food was the reason. The food would last for days. I told them that it is soo unhealthy to have these parties constantly but they were obsessed. I didn’t understand their mindset. Why don’t you just go buy yourself a good lunch and forget about making a stupid junk food party. I was just out of my mind with them. Now that I left I lost 8 pounds already. Thank God