"One Watch" vs. Rotation - Thoughts on Optimal Collection Size

[StImierKY]

I often play the "if you could only have one watch" mental game with myself. For me now, the answer to the hypo is clear - DSSD. But that's not really my point - what I'd like to hear from you guys about is:
Is "one watch" even realistic? Or is a rotation the way to go? And if rotation, how large?
I see a lot of pros to the "one watch" or at least fewer/better/smaller collection approach, including more wrist time with the one(s) you love most, building up more stories and emotional connection with the watch (yes I know it's a touch sentimental but I do think one either has an emotional connection with a watch, or not....)
I see cons to "one watch" too including the danger of compromise - trying to get a sport watch that is "dressy enough" rather than the watch you really want, and just losing out on the opportunity to enjoy more watches.

What have your experiences been, and what are your thoughts? Tell us about your collection size, whether actual or "ideal".

Especially if you are a happy "one watch" or at least "tiny collection" person, tell us what's in it and how long you've been "with your one" and what you see as the pros and cons.

Full disclosure: I am down now to a smaller collection than recently: DSSD, a Speedy 3570.50 (which isn't getting much wrist time lately) and a Longines Expeditions Polaires Francaises (I keep it largely for sentimental reasons but wear it infrequently - mostly in "dress" situations).

Thanks for sharing your thoughts on this!
cheers stimierky