How often do you buy new gaming hardware?

[CWegzz]

2017(probably): Nintendo Switch (1+ year)
Feb 2016: New 3DS XL #2(7 months)
Jul 2015: PSVita(4 months)
Mar 2015: New 3DS #1(7 months)
Aug 2014: PS4(2 months)
Jun 2014: Wii U(1 year, 10 months)
Aug 2012: 3DS XL(2 years, 2 months)
Jun 2010: PS3

I don't remember anything before that.