At $10m you can comfortably buy a Ferrari without losing sleep over it (except in anguish that it might be stolen, or damaged). But: between being frugal and b

At $10m you can comfortably buy a Ferrari without losing sleep over it (except in anguish that it might be stolen, or damaged). But: between being frugal and buying an overly expensive toy car, there's a lot of space. At $10m, you can spend $20k every month and it'll last you forever if you invest the rest in index funds at 3% or so. So a frugal lifestyle is uncalled for at that point, unless it's your personal way to obtain happiness.