Well, if I were your friend you'd be roughly halfway there, and if you couldn't pay back then I probably would not lose sleep over it. It depends on your friends, on your standing with them and possibly on who their friends are.

That said, the American legal system is totally fucked up and of course it should not take that kind of money to stay out of jail if you're innocent. The burden on society in the longer term is terrible, the burden on these individuals unforgivable. The fact that there are no penalties for prosecutors that wrongly convict, no proper compensation for time served and that prosecutors tend to do dick measuring contests based on their conviction rates doesn't help either.