My first camera in 1974 was a Canon F1. I wanted a Nikon F2, but the cost was considerably more. I shot the F1 for several years until they changed the FD mount to plastic. I did not like the change and when I had a chance to buy a used Nikon F2as I did and sold my Canon gear. Big mistake. I never liked shooting the Nikon as much as the F1.
When I got married, I needed money and sold the F2as. I did not feel bad about this as I never liked the Nikon.
Fast forward to early 2000s. I decided to get back into photography and purchased a Canon Elan7. I loved this camera and bought it with the 85mm f/1.8 as a standard lens. Shortly thereafter, I wanted something wider and bought the 28mm f/1.8. Around 2005, the digital bug bit and I chose the 5DC as I wanted full frame. Since then I have acquired the 24-70 f/2.8L, the 70-200 f/2.8L, the 50mm f/1.8 ii and the 135mm f/2L. Last March I bought the 5D3 and am in total camera bliss. Almost as good as having my original F1.
I cheated on Canon, went to Nikon, learned my lesson and found my way home.