Sewnoma you sound a lot like me. I'm up around 20 machines after about 2 years of playing with them. The difference is I'm not ready to stop. Finances are the biggest roadblock for me. Probably a good thing or I would completely fill up the house. I do have a backlog of projects but I'm slowly working my way thru them. My goal is to have them all in some sort of cabinet or case and in sewing condition. A harder goal for me is to have them all easily accessible so I can sew with them whenever I want. I want to rotate from machine to machine as I choose so none of them sit so long that they freeze up again.
Thinning the herd is difficult for me too. I don't buy machines I don't like. I have managed to give a couple away and sold one though. It is nice to see a machine go to someone who will appreciate and enjoy it.
Rodney