Gall bladder stone 0. 9*0. 5mm size.

I have 0.5cm gallstone.is it will increase gradually if I maintain diet consuming less fat.. . I am feeling pain very mild.. Should I must remove it. 1) What will happen If I didn't remove gallbladder,it leads serious issues? 2) What side effects will be there if I remove gall bladder..how much time it will take to me re over to come back normal life. 3)can I live my life normally eating, digesting, gym heavy exercising, running,also  sexual life (because next month I have marriage). 4)I have to mention this consider I have only one kidney my creatinine range is 1.08 which is normal now...if I remove gall bladder any problem for my kidney since I am living with one kidney.. 5)Is gallbladder removal is deadly? 6)hos many years approximately I can live without gall bladder.. 7)because of this removal pancreas, liver, and intestines will give problem. 8) is there a way to stop growing are removing gallstones without removing gallbladder completely.