I think the epiphany came when I allowed myself to admit that I don't like scales other than 28mm. Although I can see the use of 6mm for moderns or massed combat, I think I can now accept that I'm never going to get someone to game waterloo with me in 6mm as it would take forever whichever set of rules we used. I think that I need to set my sights on not having more troops for each army than I can use in a game that lasts 4 hours. This is an time based on my son's attention span, since in the last 3 years he's been my only opponent (excluding the time he and my brother double teamed me).
So I'll be clearing out a lot of stuff on ebay (search for jenkii3) and who know's you may find a bargain or two.