The minors is a tough place no doubt , but a lot depends on your round, money, team and if they have a plan for you. If you are 1-3 round pitcher for instance, 7 figure guys, when the rover pitching coach comes to town you get the attention. 1-3 rounds are treated differently. If you are not going in those rounds and have a chance to play D1 ball, go to college. If you are good enough after college you will get your shot, and likely do better once you are there. If you are not good enough after college, you probably were not going to make it in the minors anyway and at least now you have a degree, or close to it.
Not to mention if you get hurt. The players that are going to be drafted 1-5 rounds, know this prior to the draft. Most will have injury policies as well. Not saying a later round cannot make it, we know they do, but I would not pass up college for that grind.