Point valuation is a difficult thing, and you can actually find pretty strenuous debates about it. To me, valuing my points is instrumental. Without doing it, I find I'm a bit at a loss when figuring out which card to use or which points to use, pr whether an annual fee is warranted, so I try to be a bit compulsive about it. And the ultimate question is whether it makes sense to spend a dollar on a credit card for a reward point when I could be simply getting 2 percent cash back.
Point valuations to me fluctuate based on a lot of things -- how much of a currency I have, how flexible it is, for example. But, by and large, I tend to think hard about my values and stick with them. I think it's a trap to value points based on how you redeem them. Can you use 110,000 United miles for a $16,000 Lufthansa first class ticket? Yes. But that doesn't mean United miles are worth 14.5 cents each. You never would have purchased that Lufthansa ticket with cash.
To me, the true value of a point at any moment in time is the price at which you would be at equipoise with respect to whether you would take the point or take cash. For example, I hear people say that they value starpoints at 3 cents. To test that, I think one needs to honestly ask one's self, what is the least amount of money I would take instead of taking starpoints. So, would you rather have $3,000 cash or 100,000 starpoints?
Anyway, I value chase points around 1.75 cents, Amex points around 1.7 cents, and starpoints around 2.2 cents, to the extent anyone cares.