After buying the Nex I've fallen in the vintage lenses addiction, and in 4 months I collected around 15 primes for my little beauty. But I know I won't use many of them except for some sporadic fun or particular need. Now, with the new E-Mount lenses coming out (on top the Zeiss and the 50mm 1.8) I think I'll use them even less, and if I was starting now probably I would have bought none, or just a couple. Having a proper 50mm with autofocus and IS makes a soooo big difference! If you go out for a walk on the street to take pictures in your hometown you can have a lot of fun with the manual lenses, and if you miss a moment it's not a big problem, but if you go traveling knowing that the place/subject/animal will be seen only once in your life getting the right image becomes much more important. So, I guess that vintage lenses will continue to be great companions for mirrorless cameras, but the new Emount lenses will hit for sure the market, since now the boost was also due to the lack of proprietary lenses.