Can i get alimony? Hes never done anything else right

There are many factors that go into an alimony order. A twenty year duration is only one factor. You could be ordered to pay him alimony under some circumstances. Especially if your husband has higher income than you or controls more assets, a court will likely try to level the playing field. Lawyers who regularly handle divorces can advise you about alimony factors, distribution of assets and debts, and so on.