I have both wealth and "size". And I would gladly give up my money before my manhood.
Money can be easily won and lost. It's is fleeting. Your johnson is yours for life.
Your manhood is directly correlated to your confidence - no surprise. More than anything in a man's life, it is size...before money, success, fame, power, riches...it is this and always has been since the dawn of time. Because man has always had only one purpose...genetic reproduction. And no other masculine trait is more celebrated when it comes to genetic fitness than the "size of your boat". Women may choose a rich man to provide for and care for their children, but they want a masculine man to create the offspring.
Who women choose to reproduce with is often quite different from whom they'd like as the male counterpart in caring for and providing for their children. Many is the child who's parent is not actually his or her father.
Therefore, having it means always being confident in your genetic fitness as a man, even in abject poverty. The confidence money provides is illusory. There's no illusion about your confidence when you're packing. It is genuine. I'll take the real thing over something fake.
I think I've put this about as eloquently and "scientifically" as one can.