Ultimately, you need to keep an open mind on different approaches addressing how to carry stuff day to day that you feel you need or for convenience whether you're a male or female.
Once a person (male) accepts the regular use of a bag as a need, then I could see having "small, medium and large" options available for immediate use based on the present need. Right now, I am still in the trying out stage but leaning heavily toward a fairly regular carry of a shoulder/sling bag. We'll see if I can evolve to accepting the use as routine?