It's not just that "well, Silicon Valley is just weird and they all buy Apple stuff", tech enthusiasts are very likely to have Macs also due to the peer pressur

It's not just that "well, Silicon Valley is just weird and they all buy Apple stuff", tech enthusiasts are very likely to have Macs also due to the peer pressure. It's almost uncool to have anything else... Personally I use Windows 7 and don't see myself switching unless MS does something stupid (e.g the activation that called home on each bootup).