So I would suggest writing two lists, the pros on one piece of paper and the cons on the other. fold the paper over like the game of consequences after each note you add. Then put them away for a few days and try and find a day when you feel very even spirited = i.e. neither very positive or very negative, as that can alter your view of things. Then the idea is to match together 2 or 3 things that have connection, so that you see less back ache, easier walking, more energy perhaps against risk in any operation however small, cost if having it done privately. What you may have done with the money instead, how your health is now so that you might have no problem now but possibly in the future there might be a possible problem that could arise if you leave it. So if you have that to look at, plus try to find out from anyone you know who may have had this done, as you will have some idea of the personality of the person and be able to judge more their views. Then you can make your decision so that when you look back, whatever you decide you will feel you made a considered decision based on what you knew . Then stick with it and do what suits you. It is your body and your life, dont let others influence you until you have looked at the possibilities for yourself . Be pleased with whatever you decide to do . Good Luck