It's a hard way to go. Now he drags one leg, has a useless arm and has no vision or hearing on one side. You might too. Those who loved you will never completely recover. They'll feel regret and an unending pain.
Suicide is contagious.
Look around at your family. Kill yourself tonight and he may do it 10 years from now. You do have other choices. There are people who can help you through this crisis. Call a hotline.