Ketkev, I wanted to say that I do understand somethings of what you are going through. I had to care for my dying husband, run a business, manage a home and love and care for a small child while I was still in my 20's. I understand the stress that is involved and the precious words of the bible were my comfort during that seemingly dark time.
Yes, we look forward to that day when we embrace God but we still need to be here on earth to do His will until He calls us home. Caring for a dying person will prepare you in more ways than you can imagine. It will change you for the better if you let it. God bless and keep enduring and trusting to the end.