desperance

...Which is the same answer I'd have given you, if you hadn't found it for yourself. I'm sorry you're having a bad day (and I am aware that you & I currently have entirely different values of 'bad', in this context), but that does very much go with the territory - and yup, it is worth it. There are other lives to cherish; you want to watch them grow, they want to have you there while they do it. Etc.