When did you go full Linux nerd?

I've been using Linux since 1995, but had an on-again-off-again relationship with it for a while, because I wanted to play games. So it was usually dual boot. But in 2007 I bought a PS3 and have been gaming on PlayStation exclusively since then, which allowed me to go fulltime Linux. I also worked a lot with OpenBSD and still miss pf, which is such a lovely firewall. iptables is horrible shit compared to it (I am aware of nftables, but it's too new to replace the long years of iptables).