dilbert said:
To be honest, most everything looks crap on overcast days when there is no sunlight because colors are muted. Or maybe those that shoot ISO 3200 and above don't like color very much? Would explain a lot.
Portraits of birds, photographs of flowers, some portraits and architecture...Flat/soft light can be very useful*. Are you just talking about landscapes and birds in flight? You're extraordinarily closed-minded. That's fine, you have that right, but again please don't pretend your personal view is universal, or even mainstream (it may be the latter, but nothing you've said so far demonstrates that).
*Ironically, all these people who say they want better shadow lifting capabilities are aiming for images with less contrast. One easy way to achieve that is to shoot when the light is softer.