I have had to try to finish school now for a year and half while working full time at this place. It can be hell sometimes. I've wanted to drop out a lot.
But if you think about it there is no reason for me to truly drop out. They're ok with me taking those courses and finishing (since I do what I need to do for them).
In your case, Finish the degree so you have it. The only con that ___MIGHT___ happen (emp. the unlikelihood) is that jobs and opportunities you could have gotten by dropping out will go to someone else. Reality is that those things only come in to your life via social connections which almost always come from knowing someone in college (as in my life, as in the lives of many a famous start up founder, etc.). Realize you should be using college to build those friendships and connections while you finish those courses.
As someone who works full-time while going to school, I'm painfully aware of what I'm missing out when I don't have the option of staying around and talking to someone for a bit and catching up.