Remember that for a lot of third world seamen until things go badly wrong it's a very well paying job. In a decent company the average Filipino seaman earns more than a doctor back home. That said most of them use their hard earned money to educate the hell out of their children so they can get decent jobs elsewhere- US, UK, Europe, Australia being favourite.
For those like me it was a great job until the internet and computers arrived. In my early days I worked for some real cowboy outfits but the money was great, the job was fun and the bullshit minimal. Since then its become shite as know nothing managers ashore try and micromanage every aspect of the job. As soon as I can afford to retire I'll be off.