College for the longest time has not had anything to do with learning for the VAST majority of students. You go to college because you have to have a degree to get a job. And you have to have a good GPA on that degree to get a job. College is not about actually learning anything - it's a purely monetary investment, where you go into debt totaling up to hundreds of thousands of dollars because you know that it will net you more money in the future. Not cheating is completely risking any hope of financial independence you can ever have for your entire life.
Given all of this, why wouldn't you cheat? You take an extremely minimal risk (most profs don't have any clue, or do not care about cheating at all) to avoid a much greater risk (you not getting good grades and potentially never getting any return on your lifelong 6 figure deep debt).