I'm not a big fan of keeping birds as pets for that exact reason, but when it comes to keeping existing pets safe, I think a little bit of annoyance on the bird's behalf for 10 minutes it's worth it for their long term safety. Like getting a microchip for a dog, I guess. If my dad's galah got out and flew away, she'd probably die because she wouldn't know how to find food, or she'd get hit by a car. However, she's very tame, and isn't bothed by being fed sunflower or apple seeds while her wings are being clipped, so it doesn't make me feel too guilty.
Sorry, but I don't think that birds should be kept as pets or domesticated at all. There's nothing wrong with looking at wild birds fly around outside and eat nectar from trees. Clipping their wings is cruel, no matter if you feel guilty or not. People only clip birds' wings so they can't fly and it is only done for the human's convenience. Therefore there is absolutely no reason to clip bird's wings.
As I said .. it's my dad's bird, and I'm not a fan of keeping pet birds for the exact reason the OP posted. So what I was saying was in regards to an existing pet which isn't mine, I had no say in the purchase of her. With this particular bird (as I pointed out, isn't my pet), her are are clipped so she doesn't fly away herself or injure on fans or stoves like someone else mentioned, she'd surely die if she got away.
As I said I'm not a fan of keeping birds, but I'm not going to go releasing someone else's bird just because I disagree with the practice of keeping birds, she'd surely die, considering he's had her for 21 years and she has no idea how to look after herself. I think that be a lot crueler of me.