You have to keep in mind that it is easy to let kids be kids when they aren't having the complications of CF. But for instance with the one who stopped swimming, the trade off was between swimming and being sick and having antibiotics and potentially hospitalizations. I think Jenny said it best that you have to figure out what works for you and your kids. Our son has constant GI issues and many a days are spent just dealing with that. Adding an antibiotic and further messing up his GI bacteria balance followed by 2 weeks of Flaygl to address that problem (which also means DH has to take work off to hold him down and he'll still vomit the stuff up 1/2 the time), isn't going to give him a normal life either. Either way his life isn't going to be normal, either restrictions ore more complications. Yes, we have restrictions that some others don't choose (like swimming), but within those we do other fun things that don't pose the same risks of otherwise restricting his life with pain and even more doctors and hospital stays. And with drugs so close to helping really address the problem, some restrictions now when he is young and isn't missing anything (or knowing he is), so he can have fewer restrictions as an adults (less treatment b/c less permanent damage, no lung transplants, etc.), is another consideration.