Even though it is an inanimate object, there are memories attached to the object.
It may not even be the haggling than it is getting the bike into the right person’s hands. Even though it is just a bike and has no soul, there has to be a desire that the next owner will cherish it and one day be in the same position that you currently are.
And the other side is the fear that it will end up out in the rain and just rust away.
If there is any sentimental value, hang onto it until you find the right person to sell, or give, it to.
John