I pug almost exclusively since I run a very small FC. Sometimes you get a great group that works like a well oiled machine and sometimes you get some who struggle. That's the cover charge for using DF. The game randomly matches players who have a variety of playstyles. I know when I go into DF that I'm rolling the dice, so I adjust where necessary. If I get into a situation where even adjusting isn't going to work, I remove myself. If groups struggle, I put myself out as a resource if I'm a vet, and remain supportive and optimistic if we wipe. If it gets to a point where it's just not going to work, I politely excuse myself. I'm usually the very last to give up. I stayed in an instance of Rabanastre at Hashmal before and watched a raid rebuild from just myself, as others had quickly left once we were under the max, and we went on to clear the rest of the bosses easily.

For me it's because I take ownership of the fact that I agreed to match myself up with random people, and I should be flexible towards what hand I'm dealt.