But the union is NOT paying benefits, the company is, they only negotiated them. The company chooses to pay the same rates for non-unionized workers because otherwise they would join the union.
Right to work laws are very important because a majority has no right to restrict a minority in what they can do legally. If a minority voted not to strike and to work instead, they should have the right to work.
Unions have declined for decades and we have seen nothing but our lifestyle get better and better, except of course with government growth and taxes - which are what unions fight for anyway. Good riddance, we have no unions in the high-tech sector and we are doing very well and Americans have certainly benefitted with lower prices from manufactured goods overseas which allows more disposable income to be spent on service industries like massage therapy, gyms and so on.