Should laws require the loser in court to pay all the expenses of the winner?

Pro: If laws require the loser of a case in court to pay all court costs and the legal expenses of the winner, then the number of frivolous lawsuits will be kept at a minimum.

Con: If laws require the loser of a case in court to pay all court costs and the legal expenses of the winner, then people who want to seek justice in the courts will consider not only the merits of their cases but also the chances of losing them because of other factors. The quality of legal representation is one such factor. Many of those who think that they are right but cannot afford to pay the price if they lose their cases will not bring suit. Access to the courts will tend to be reserved for the affluent; the poor will have their ability to seek justice impaired.