I would go a bit further than aPD in terms if the value of nights. you don't just learn independence. You learn "to be a doctor" when you are there by yourself, calling all the shots. the hardest thing in medicine isn't having the knowledge base, the procedural skillsets. Everybody can master those over time. It's being able to make good decisions, often without perfect information, when you are the guy where the buck stops. The most value you get during intern year is being alone with the pager, putting out fires. You learn to make good decisions. You gain confidence. You experience being in charge. Before that you are a student. After a year of that you are a doctor. You still have things to learn, but that the real value you need to come out if residency with. I don't think you ever can duplicate this during the day. too many people around. Nurses are never going to call the intern if a senior they trust more is in the building. Patients not sundowning and trying to die on you. Not being woken in the middle of the night to run and fix a crashing patient.etc. So no, if you want the skills necessary to be a good doctor, don't choose a Program with no nights. That doesn't mean you have to be Masochistic and choose the worst call schedule possible, but you'll actully go further looking at these things as a learning opportunity rather than lifestyle impediments.
Of course if we are talking about TY where you just want to get through to do your advanced residency in something else, then sure, pick the cushiest schedule you can find.