AP,
I'm all for equality as well, but we shouldn't overlook the acute shortage of local pilots!
Nigeria hasn't been getting sweet press reviews lately. Kidnappings, health hazards, robberies, faked "elections", etc. Again, what I'm saying is that in order to lure (for example) the Australians, Canadians, and Italians to come to Nigeria, the airlines have no choice but to throw a bone in their direction.
What you're saying is "that's fine, so long as I'm also thrown a bone" - yet this is your own country! Leaving family behind is not an issue, nor is cultural shock, paranoia of being attacked, etc.
Something has to give!
Are you familiar with Emirates' pay system? I'm not putting it in high regard, but just take a look at how the crew are paid in accordance to "average pay in native country"! Not a utopian system at all - but who said capitalism is fair anyway? Demand and supply!