I think the main consideration for me, when choosing an airline, is whether I feel 'safe' I don't think there's really any logic to it, except I think it's just a feeling of familiarity with the airline, etc. Nothing more nothing less.
During one of my previous lives during a 6 week BA Cargo contract I, weekly, needed to position a flight crew DXB/NBO and back again, NBO/DXB, three days later and the only airline that operated on the days we needed were Ethiopian via ADD.
Well one should have heard the kicking, screaming and/or racist remarks regarding us positioning them with such an airline but faced with no choice they did as they were told.
When the crews returned at the end of their contract stints to a man they all voiced their appreciation of what a fantastic airline Ethiopian were/are, our crews were turning up in uniform getting free upgrades and pampered to hell and perhaps the loudest of the protesters, a hard nosed Brit, actually asked us to write to Ethiopian thanking them personally.
I'm a Brit and, no longer, would I touch BA with a bargepole, my two most recent experiences with them, 10+ years ago, were when they cancelled my flight for commercial reasons, lied to me that it was for technical reasons, invol rerouted me on an airline with no UK representation and then refused to do diddly squat to assist me in claiming for my trashed suitcase. I gave them one more chance thereafter and we flew a bumpy AMS/LGW with the gear down because the silly sods had overfuelled the aircraft never mind that they had seated me in a broken seat!