I don't understand people who go through 8h+ economy flights and then say - I want to do that again! After just a few of those I swore: never again. Since then

I don't understand people who go through 8h+ economy flights and then say - I want to do that again! After just a few of those I swore: never again. Since then it's all been a giant puzzle: how to avoid the long distance economy seat. 10-15 years ago, buying US Airways Dividend Miles during their repeating sales and then using them to redeem business/first class award tickets on Star Alliance flights was the way to go. Since then it became more complicated (and more expensive).