If you will kindly let me be the devil's advocate here.
Although it can be said that most VC owners purchase their timepieces for the love of the watch and not for investment, I believe that we cannot say that this is true only for VC, as the majority of PP and AP owners also purchase for the same reasons we do.
The reason why there are more flippers in PP's and AP's ranks is that it is simply more profitable and less risky to flip PPs and APs than most VCs. Whether we attribute it to marketing or deliberately lowering production figures, it is still a fact that demand for PPs and AP (ROs) is higher in general and therefore, PPs and AP (ROs) generally hold their value better (with some appreciating or being sold at a premium). On the other hand, the relatively lower demand for VCs means that a good part of VCs line-up still lose a considerable chunk of their monetary value the moment you step out of the shop.
In a sense you could say that you would really HAVE TO LOVE your VC because it takes true love to purchase a watch knowing that re-sale value is low or substantial profits are not to be expected in general. If your were a flipper, would you go for a hot Nautilus or the discounted Overseas? (Note that I am not saying one is better than the other quality-wise)
Now, if demand for VC watches were to suddenly surpass that of PP's or APs, the law of supply and demand will dictate that VC's will be offered in the grey market at a premium; you will have many flippers joining the fray; and a larger part of VC lovers maybe tempted to sell their pieces since profits are at an all-time high! Exactly what is happening with PP right now.
Just my two cents on flipping.