I think collectors like you, where the fun of the chase is the main thing, are a fantastic asset to collectors like me. You seek out the rarities with a real vigour, yet at some future date you are happy to let them go. I know I have obtained many choice items for my collection thanks to such collectors, and always at prices well below what dealers ask.
Sad to say, my sort of collecting tends to be one way traffic, and I only let things go if I have more than one example, and then usually only as part of a deal for something else.