Considering that the Mazda 626 was the 6's predecessor, I've owned a 6 most of my adult life.
My very first car was a 1989 626LX (2.0 8 valve) which I bought in 1997 and sold it in 2005 to drive my wife's 323, big mistake..
To fix that, I bought another 626LX (2.0 12 valve) in 2007 (a 1992) which I owned for only a few months before moving to Canada. Here is a pic after going through a mud pit at the beach.
In 2008 I bought a 2004 6 I4, basic with the 4 speed automatic transmission. Didn't get the V6 thinking it would use much more fuel, later discovered that I should've gone for the V6. Sold it on 2015.
Wanted my kids to learn how to drive standard so in 2016 bought a 2006 V6 GT Hatchback with every option available. Absolutely loved it, after discovering how fun the V6 was, I regretted owning an I4 for so many years.
Drove it for a while, until my oldest kid learned and got a good grip on driving stick. About 9 months ago I bought an SHO and parked the 6. I plan to put it back on the road in 2020 when my other kid gets his learner's license.
Not sure what I'm going to do with it after he learns how to drive, not worth selling it, awesome car for so little market value, time will tell.