Why holes in formers?
I've built pretty much FG models because I like them and I think they suit my abilities.
Since I joined this group I see many models, almost all aircraft, that are constructed using 'formers', kind of like bulkhead structures, many with holes of various sizes cut through them.
I've followed a couple of build threads and it appears that the main use for these holes is that they make a convenient grip. I've seen some builders route their rigging through them.
Is there any other use for these holes? Anything else I'm missing here? If I build a model with these formers and I don't cut the holes is that a problem?