I got teary eyed just because you replied, I haven't really been able to discuss this with anyone and it makes it seem so "real" now.
I just believe in commitment, in not bailing out just because things aren't going as planned, or just because someone is sick. I would want to be loved unconditionally by my spouse, so I try to love unconditionally. The situation at this point is just kind've an uncomfortable burden, not grounds for giving up. I just know that in my last marriage things went downhill so slowly that the misery became normal and I never even noticed how awful of a situation I was in until I got out. I certainly don't want to wait to get to that point.