Plumbing is one of those professions that white-collar workers love to bring up as an example of jobs that makes lots of money without a college degree. Contrary to popular belief, plumbing is not easy money . Unlike most modern jobs, you have to complete a long and arduous apprenticeship before you can start making the big bucks. Plumbing requires a willingness to get dirty, which most people are unwilling to do for eight hours daily. It's hard work, and if you can stomach it, you've got a gre…