Know what you mean about family being precious and also about realising what an important building block food is in our lives.
We have a pizza once week or so. From a local italian place that imports it's flour from Italy, makes it's own dough from scratch, uses free-range chicken, offers gluten/dairy free options etc.
I think the main thing is to cook a lot from scratch, mostly so you know what is going into things, and find sensible time saving pre-prepared alternatives sometimes. That goes for both cooking at home and eating out- a restaurant that cooks most of it's own foods from scratch is different proposition from a chain place that reheats stuff.
So some shop bought sauces are fine- just check the ingredients label on them to see if they sound like food rather than a chemistry dissertation.
So yes, keep an eye on salt and saturated fat, also maybe free sugars, but also have some positive things like upping fruit and veg, omega 3 etc, how much is fresh. Also I think food quality is important, so things like things being in season, local, free-range/organic or from a trusted supplier if that's your thing.
For example, on place we lived, there was a local potato/vegetable grower. Both DH and I met people from it through work. They were always sensible, friendly, knowledgeable. The firm donated some produce to a local food project that worked with impoverished families to increase both fresh food availability in areas where there was little fresh food available and to increase cooking/nutrition skills. But not in a showy way. We used to look out for their stuff locally as it was good quality, and now we have moved out of the area, I know what farmer's name to look out for on labels in a couple of supermarkets- their stuff really is good quality so I am loyal to them.
Past that, it's really a case of working out what works best for each individual person.
For example, it works best for me to eat maybe one portion of fruit, a few vegetable based meals and one protein based meal a day. DH is in better health and shape when he eats protein at every meal and also eats a lot more fruit with no troubles. Everyone has slightly different needs based on lifestyle and physiology, so while I don't monitor food, I do often conduct trial and error experiments about what suits people and let that guide what I buy.