Quality of life..

I want to thank everyone who gave me advice on my post about signs. I was wondering if I was getting signs from my husband to pull the plugs... He was hit by a drunk driver and has been on life support for four days. I saw a comment... Someone asked about the quality of life. I was so distraught and wanting to keep him alive I don't even think I was listening to what the doctors said his life will be like IF he survives. He will be completely paralyzed. Not just waist down. His whole body... He won't be able tobtalk and will most likely be eating out of a feeding tube his whole life... I would take care of my husband until the day he died... But even his mom said he wouldn't want to live his life like that... Never being able to do anything he used to do. So now I'm asking myself if survival worth it if you have no quality of life... If this was going to be your life... Would you just be happy you're alive or would you want to pass on. I feel a part of me in my heart knows the right decision but I'm not ready to face it. So far my mom, and my sister both said they would just rather die. Would it be selfish to keep someone alive if they have no quality of life?