Evolution and society has shaped our ways of flirting, but deep inside, the basic instinct survives: the strongest, fastest, fittest male prevails -like a peacock or a deer-.
Rich men provides an easy life, that seems interesting for many women.
Outlaw bikers provide an adventurous life, that seems interesting for many women too.
Comitted partners that ride bikes may be the best compromise between both extremes: you can provide your household and at the same time you can give some exhilaration.
Be it riding bikes, paragliding, or canyon diving, life must be worth living. It is important to make money so you have no trouble making ends meet, but it is important to put some emotion into your life. I wonder how sexy do women find men who are responsible and, at the same time, live their lives to the full. My wife doesn't like riding but she likes doing tourism. She loves when I take her and show her a new city, even if we eat at McDonalds. But at the end of the day, she wants to rest in a good hotel room, not in a tent.