Agreed Brooke, that is the great thing about leagues and the lower stakes more casual environment is a great way to introduce newer/less skilled players to competitive golf and the etiquette that goes along with that. If you get upset about $5 lost at a doubles league then you are probably in it for the wrong reasons.. I treat it as a bonus when I walk away with some cash.
That said, Local 101 Saturday doubles does cater to the more experienced player just due to the regular group (and the course). Steve P. you may want to check out 24 Chains, that is a really great fun league that typically plays for even lower stakes or many times just the bragging rights.