What is the point in being a japanese salary man?

sorry if i posted this in the wrong place, mods feel free to remove this if needed

so ive been watching alot of videos of japanese salary men recently and its kinda confused me, i always assumed that the benefit to being a salary man was that it paid well, you do boring tedious work for hours on end, but you get a nice chunk of change for it, but from the videos ive been watching that doesnt seem to be the case, its crazy to me seeing these men who are only a few years older then me (im 20) working 12-14 hour shifts doing boring work for long hours, only to barely have enough money to cover rent and bills, what is the advantage to being a salary man as opposed to working in say a cafe or a convenience store

i mean jesus christ these men in their early to mid 20s have no friends, no partners, no social life, no free time to even make friends, for barely any pay, i just dont understand

sorry if im being ignorant, theres obviously alot of stuff i dont know about japan, i would appreciate someone helping me understand just why so many men work as salary men, thanks!

by maxharlow777