How long do you or should you keep your gear.

It depends on the particular type of component.  Something like a streamer is, by its very nature, something that has to be newer than stuff that can be decades old.  My speakers I bought somewhere around 2003.  But, I switched out the midrange horn and driver for something better.  The something better being a driver that was built around 1939 and a vintage horn of unknown age.  My amp and linestage are from around 2011, but, they are custom builds with some parts being about 60 years old.  My turntable is around 16 years old, although the motor controller is newer.  My streamer/DAC are around two years old.  My power conditioners are a year old.  My headphones are around 16 years old; the amplifier/energizer for the phones are probably 9 years old.

@millercarbon yes you are and that is a compliment. Merry Christmas.

@oldhvymec Yep I agree.

@jerrybj I am a hoarder also and it makes my wife crazy.

Crazy thing is I'm lookin' at 20 acres. Maybe 40 after I think about it. LOL

Regards

LOL wife and I were cleaning out a closet in our guest bedroom (son and wife coming home for xmas) found 2 old Integrated amps in that closet and 1 more in the attic.

@oldhvymec wife said she is going to have one hell of a garage sale when I die.