It used to be that to be a farmer all you needed was a strong back. But today's farmers have to be good business men, and able to evaluate a lot of scientific publications and complicated legislation. Then comes the hard work.
I don't think farmers complain any more than other businessmen.

P.S. As an example of the crap farmers have to put up with from idiotic politicians, early in WWII, farmers had to get permission to slaughter steers. One farmer applied to slaughter a hundred steers. He got back a letter giving him permission to slaughter fifty, but requiring him "to keep fifty for breeding purposes." Need I explain the risibility of that?