[Insert Scathingly Brilliant Title Here]

Oh, no. I really feel for you. We had a fish tank for about 4 years, and we constantly asked ourselves why we kept putting ourselves through it. Every fish we lost broke our hearts, and like you, I often wondered if we should have put the sick ones out of their misery, but we never could bring ourselves to do it. I did come close to just netting one out of the water and letting it die in the air, thinking even though it still wasn't going to be fun, it would at least be faster, but in the end, I just sat there and watched it slowly die, and was miserable about it. We finally just decided to not add any more fish, and when the last one finally went, we broke down the tank, and will never have another one.