They stole my my help as a bonus action idea...
Why would a corrupt noble want to hire someone to forge a document upon hearing that she did a bad enough job of forging a document to end up in prison?
Yes I have been lucky with my dm's, and so have my players, sorry your dm's have brought you to the viewpoint that combat is the only measure by which characters should be measured or that combat is the only measurement that actually matters.
I rarely have failed checks that lead directly to combat.
Obviously, the result of failed social checks is going to vary based on the circumstances.
I'm currently running a Rise of the Runelords campaign. At one point, the party decided to investigate one of their leads in a murder investigation by forging documents to claim they were handling a nobleman's affairs while he was abroad. They brought these documents to the trade company the nobleman had had dealings with, but the person in charge of that company had already learned from other sources the nobleman was deceased and determined the documents were a forgery. Rather than immediately calling for the guard, he offered them an exchange of information. The party's answers to his questions gave him information to increase his own sphere of influence, while his answers to the party's questions gave them leads in their own investigation.
Of course, the NPC in this case was rather unscrupulous and worked for a rather shifty organization (though the general public thought them respectable) so that situation isn't always going to come up, but it is an example of failed rolls not being an automatic failure. (And really, the party rolled really well, he just rolled better and had some magical assistance.)