The tags and whether to keep separate or merge was discussed in the general tag issues threadwas discussed in the general tag issues thread but not many people bothered to comment on it at the time.
I was just "being bold" since the few votes seemed to think it was a good idea to lump them together but certainly feel free to discuss and change them. I think DoriDori did the original merging and then I added more to my answer later.
One problem might be where the family fits in if putting children of different ages in different tags?