Which is why I said mostly tiny, short, or otherwise light dudes, and women. That whole bit was generic anyway, and not intended directly for you.
My first one was a 750cc, but it was 2 years older than I am. Just get something cheap, that runs, and learn to ride, then sell it back. Without doing much of any research, found a couple Virago 535 bikes in the $1500 range. SOme Yamaha VStar 650s in the $2500 range, a few Vlucan 500s, etc. Plenty to choose from, shouldn't be hard to find something that fits you and you can afford without buying new.