Which of these two is worse:
Losing something you love so suddenly like a bolt out of the blue or watching something you love turn into something you can no longer stand? In the former, you have no means of knowing the inevitable end. You might some day have peace. In the latter, the stench of decay will cloud your perception of anything else that could have been.
Personally, the former is better. You can at least retain the illusion that everything was perfect and would have remained so. Illusion to keep company on the lonely nights when reality bites.