If you're under 5'6, height. 90% of women just won't find you attractive enough to go out on a date with you, unless you've spent month as her friend and she's suddenly found you attractive because of your "personality." That's just the truth. You will not be attractive to most women at or below 5'6.
Anything above 5'9, wealth. The lives between a 5'9 millionaire and a 6'0 millionaire will be nearly-identical. Once you're 2-3 inches taller than the average woman, it really doesn't matter anymore. 5'7 and 5'8 are still kind of on the short-side, but you'll do fine if you have a decent personality and decent body.
Being a millionaire at 5'6 you will be able to find women to fk you for money of course, as you would also be able to as a 5'1 man But I would feel really bad about myself. It's fine that women just won't find my sexually attractive (ever) in anyway at below 5'6. It's akin to me never being able to be attracted to a woman that are morbidly obese. That's why we're all here.