Collective bargaining for wages, benefits, worker training, work place safety, seniority rights, health care coverage, etc... is what made the middle class. Would non-union shops today provide anything more than the barest minimum to labor without the past and present collective voice of labor unions? I doubt that very much.

Is management free from office politics, fair,ethical, non-vindictive, and objective in determining job positions, promotions, raises, downsizing etc...? Not unless human nature has changed recently.

Unions aren't perfect, but then neither is management.