Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Kind of...I've done it for some iPods and a gamecube...but I've lacked the will/push to sell any of my Macs(although I've tried)
 
When I do "upgrade", I usually hold onto the hold gear as a backup.

I don't have just one of everything, though one of many things.

When I do have a backup, if it's expensive, it's just one thing. My Mac mini with DVI LCD is backed up by an old iBook. My $650 dollar guitar is backed up by a $450 dollar guitar, etc. This is in contrast to having four computers (and all set up) or four guitars laying around in different rooms, which was once the case when I was a hoarder.

But I only have one TV, car, dining room table, stove, fridge, garage, bathroom, etc. My hoarder friend has four TVs and three refrigerators in a very small house with basement.

But some things you usually need three or more of like shoes (dress, sneakers, back up sneakers), and some things it's nice to have ten or more of like socks (4 white pairs, 6 black pairs), batteries (2 Ds, 6 AAs, 2 AAAs), underwear (8 briefs, 2 boxers), toilet paper rolls (at least an unopened package of 6 if not 12) for instance. I did get by for years with one pair of sneakers and one pair of dress shoes and when I was a sporting goods salesman in the shoe department, I would sell tons of sneakers to guys who were replacing their sole worn out sneakers which they would be wearing.

Most of those guys had one other pair such as a pair of dress shoes. If I had a good day with that customer, I would sell them some nice dress shoes and a decent pair of New Balance cross trainers! And in many instances, these shoe hating men/boys would ask if they could have something akin to a Rockport or knockoff which could double as a sneaker and as a dress shoe, so they could cut it down to just one pair of shoes.

This is one place where I found a marked difference between men and women. I do have friends who have three or four pairs, but they are those said Rockport knockoffs, all the same make/model.

Three are two prevailing theories to having "stuff" or inventory. There is the Japanese model of JIT, or just in time, which means keeping minimum amount necessary and buying fresh inventory and supplies when needed (taught as a staple these days in every MBA school),

and

JIC which means just in case by having lots of everything imaginable. The JIC model destroyed many an American company and this almost uniquely American trait is a cause of stress for people who are in the thick of the serious mental illness of hoarding (a form of OCD). If the barbarian armies were the downfall of Rome, JIC killed the American empire, or dominance they once enjoyed in the Post-War Era through much of the 1970s.
 
I need to get a new Mac. The PowerBook I have now is the one I have kept the longest as my primary machine. (1.25 years) I have never sold any old computers because I can never have enough. I wish my old iBook worked (it was my primary for .75 years). It would make a nice server. I have only my PowerBook and my dead iBook. My friends PMG3 was my primary machine for .5 years when they were selling MacBook Pros.
 
Three are two prevailing theories to having "stuff" or inventory. There is the Japanese model of JIT, or just in time, which means keeping minimum amount necessary and buying fresh inventory and supplies when needed (taught as a staple these days in every MBA school),

and

JIC which means just in case by having lots of everything imaginable. The JIC model destroyed many an American company and this almost uniquely American trait is a cause of stress for people who are in the thick of the serious mental illness of hoarding (a form of OCD). If the barbarian armies were the downfall of Rome, JIC killed the American empire, or dominance they once enjoyed in the Post-War Era through much of the 1970s.

I guess it has more to do with the value of an item to me, vs the value of the item if I sold it. In many cases continuing to hold onto a once expensive piece of gear is simply a better idea than selling it and hoping to make a few bucks back. If the gear no longer has any useful purpose or value to me, then I will dispose or sell it.

I don't hold onto everything, things like shoes I only keep what I need for example: 1 pair of black dress, 1 pair of brown dress, 1 pair of Danner work boots, and 1 pair of hiking shoes, and once a pair wears out it visits the trash.

I am sure some of this has to do with the available ammount of space I have at my disposal, in the case of my audio gear a 6000sq. ft. warehouse. If I had a much more limited ammount of available space, I would not have nearly as much gear.
 
My 2001 iBook was donated to someone who couldn't afford a computer for her kids; they also got tons of software and books with it. That was in mid-2005.

I ran off to the local Apple Store and ... should've bought a 12" powerBook online. Alas, I saved a bit of money buying another iBook. I stripped the drive of nearly everything save iTunes & iPhoto, then added MS Office. A year-and-a-half later I "upgraded" to my 2003 powerBook that was only for graphics and video, donating the new machine to someone else in need. Why? The drive was too tiny and the processor too slow.

Last October I had no choice getting an MBPro to replace the aged 17", as it's just too slow to view YouTube and handle some of my 3D stuff. (Or play Sims 2 :p )

Not going to toss the 17", though. It's good for viewing DVD's and playing Sims 1.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.