I've had the privilege of seeing behind the scenes of what actors go through, and tbh it's neither easy nor glamorous- it only looks that way to an outside observer. I'd assume that modeling is similar. The good ones do huge amounts of exercise to maintain their physique, then cram themselves into shoes 3 sizes too small and do another grueling dance number in those shoes in front of hot lights on stage. And they have to look like they enjoy all of it. Sure, they aren't restoring utilities and keeping our nation running, but I wouldn't call their job easy by any measure. I would assume that good models also put a huge amount of effort into their craft.