If I went back and it still didn't work out, I could always just give up on everything completely (might as well at that point). But at least then I'd know I did everything I could to pursue something I was truly passionate about and that meant everything to me, and I'm completely DISpassionate about everything else without that one thing. Even if I can't have both, I already know all the reasons I'd choose love, but I can't think of any to choose "life" because I haven't seen anything special or worthwhile about it as of late.
