Marlin,
Here is my take on this. Some will just simply be questions to ask yourself......
Just possessing them, are they costing you anything. Not what you want to do to them, just them sitting there. Do you have enough room to store them, and not paying for storage?
I assume sometime in the future you plan on retiring? If so is working on these part of those plans?
I don't know your personal situation, and not going to pry, but do you have to sell any, really?
My opinion is, if you have the room, they aren't costing anything, and you have plans for them, let them stay right where they are. If you need some room, and you have one(s) that are a parts machine, pull them apart and put them on a shelf.... take up less room that way.
I understand passing on another one, especially when picking it up would be a road trip....
Dad and I now have into the low teens (all but 2 are at their place) we have a couple that are definitely "parts machines" (basket cases that are just beyond help) and we have talked about taking them apart and placing the pieces on the shelf, since they will take up much less room. Mom and Dad are both retired, and puttering around working on the various Cubs he has is one of his retirement activities.
This hobby, just like others has it's ebbs and flows..... There are times we do things to improve, or make more useful for what we need. Other times, they are used for their designated chore, and put back away for the next time, only doing maintenance to keep them working.....
I'd say if they all have a place with you, for sentimental or other reasons, and you are hoping to show them some love, hang on to them, and show them love when you can. I know all too well, that life can get in the way of our hobbies. My 1450 sat at Mom and Dad's in pieces for over a year, due to an early arrival of our youngest. One of the 149's Dad has been working on, sat in his shop with the engine on the bench for probably 3+ years. That being said, it's now back together, and been given a purpose. There are still others in line, some need put back together, some still yet to be taken apart.....
Do what is best for you. Just remember, as long an you have them, they can still receive the care you want to give them, sooner or later. But, if you send on , it will not have that opportunity. I'd rather have it there, as a carrot to pursue, to keep me going and engaged, rather than looking at something that is a project that I will never get to...... I have things I want to do with the tractors/house/vehicles/yard/etc, but with a family,job,etc, some of those things just have to wait their turn......
