69K UA
22K NWA
41K Delta
A few k miles in many other program.

I used 25k once with UA, 25k once with NWA. That's the entire history.

By the way, there is a strong sampling bias, because only those who are more likely to accumulate and redeem miles will come here. So general population should have much lower mileage utilization rate. That's why I advocate the utilization rate should be factor into the value of a mile. For example, your mileage value is 1.5 cents/mile, but eventual utilization rate is only 50%, then the fair value should be .75 cents/mile. Because it seems no mileage program allows you to pass on your miles to your beneficiaries.