Here are some reasons for business class and first class:
Certainly treated better by staff when flights are delayed or cancelled - They took excellent care of my wife and her food and lodging needs when her flight was disrupted by a volcanic eruption at her intended destination.
The airline lounge - food, drinks and comfortable places to wait while stuck at airports
More and heavier checked bag allowance - Super important if bringing things to family
Laying down on long international flights to sleep
Most importantly, if you are a person of colour or disabled, the staff treat you a hell of a lot better - Shouldn’t have to pay more to be treated like a human being, but on a lot of airlines, you do
So it’s not a waste, especially when my wife is flying alone 7600km, 10,500km, and even 11,700km as both a person of colour and a disabled person to deal with family tragedies. For you to want to screw with people for that… Yeah, don’t care for you.