God doesn't want us to persist in the sickness of sin. God wants us to be cured from the sickness of sin. We can be cured if we trust in God's word and stop practicing sin. God expects us to repent of our sins; that means we must change our life and stop sinning. That doesn't mean that we will be perfect; but we don't have to be perfect to stop making sin a deliberate and purposeful habit. We must cease doing evil and do good!
Some operate under the delusion of the once-saved-always-saved doctrine. They think they have a license to sin because they can't lose their salvation. Such false doctrines are contrary to the plain teaching of scripture. Hebrews 10:26 27 says, "For if we sin willfully after that we have received the knowledge of the truth, there remains no more sacrifice for sins, but a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries."
Do you want to be sick? I have been sick many times with some kind of virus. Sometimes it was the flu; sometimes is was something else. Being sick, however, there was one thing I knew; I didn't want to be sick! People who have Munchausen's Syndrome, however, not only want to be sick, but, and as odd as it sounds, they like being sick.