Answer:
Maritime marauders
Most people need it, some ask for it, some give it, but almost nobody takes it. What is it?
What falls down but never gets hurt?
Possibly the word most commonly said before taking a sip
What is it that after you take away the whole, some still remains?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.