Lets say you were employed by a company (not a long time ago), that suggested good money and social package. Though while you are occupying a developer position (i.e. java) you do not spend much time programming. And that's generally because the platform, which is used by this company, doesn't assume a lot of coding, only for customization, and even then there's more digging and using already made modules/functionality rather than writing one yourself. Which means you're not gonna get a lot of java development experience. And let's also assume that you're youngster in SoftDev, and you're passionate (though I hope you don't have to assume that:)) about it.
It's also important, that somehow you can find guys in that company, who are truly skilled and have good programming knowledge and great experience list.
Platform is totally closed, have never see such proprietary thing. You have no access to source, the only thing that comes in handy is decompiler.
Note: important is that it's an e-commerce thing, and you have never worked in such a business.
So, what would you do in such a situation?
EDIT: The question is: would you quit a job, for which you are paid good, but which doesn't improve your coding, abut which leads to certain experience in e-commerce?
EDIT: It's extremely hard to choose one correct answer cause I find 3 of them to be correct. So I up voted every close one. THANKS FOR GREAT ANSWERS!