I've had an epiphany myself of late. Apart from my forthcoming Pashley Guvnor, I'm not planning on any further bikes and will concentrate on finishing restoring/building what I've got and then 're-evaluate my position.
On a more practical and personal level, my wife has MS and may have to give up work soon. If the happens then our income will drop - not bad, but I won't be able to afford fripperies like 5 cars between the 2 of us (her Disco, my 4007, my 107 turbo, and my 2 x 405s awaiting attention), so I'll probably sell the lot and buy our last ever car, either another Disco or possibly a Land Bruiser, save a fortune on insurance, tax etc.
We won't starve, and in general our lifestyle won't suffer, but I'm going to have to rationalise, be more sensible about acquiring bikes, cars etc that I have little realistic prospect of ever riding/driving