It appears to be well paid. And as a kid that grew up poor if the choice was 3 weeks of parental non contact or mayonnaise sandwiches for dinner, well see you in a few weeks, mom!
There's a lot of training involved in going offshore, and if you're able to go through training to get out of poverty, there's a hundred other careers to go for that don't involve multiple weeks away from family.
To be fair, we lived in an area where oil and gas are the biggest industries, and my dad was a geologist. But still, I wish he'd just been around more.