The OP-1 is a worthwhile investment. As you can see, it is worth more now than it has ever been worth before, a trend I see only continuing as time goes on.
I don’t expect to retire on the money I’ll get from selling my OP-1 in thirty years but I’m sure it’ll pay for a couple hyper-virtua-FX (or whatever is rad in thirty years). Or, if I die before I sell it as an older gentleman, it will bring in some money to help comfort my abandoned family.
That said, I agree that the price of the OP-1 is quite expensive. Certainly, as an instrument it succeeds wildly for many whereas others view it as a toy or as an inferior piece of gear.
As for myself, I believe it to be an effective instrument and use it frequently in my own music to add flourishes which would otherwise be difficult for me to attain.
Additionally, I feel the OP-1 exists at the intersection of musical instrument, objet d’art, and lifestyle signifier. I have already discussed why I believe the OP-1 is a musical instrument (professional or toy; you can decide).
As mentioned above, an OP-1 is on display in a museum forever which gives it a certain glow. A Waldorf Blofeld (cheaper + better than the OP-1, though less immediate) is not in any museum, for example.
However, I believe the OP-1 is in the museum because of its status as a lifestyle signifier. The lifestyle signified is minimal, refined, clean, socially conscious, aesthetically pleasing, and not without a certain wry humor.
For those reasons I believe the OP-1 is a worthwhile investment.