I work in a leisure centre and we run many spin classes in the week, lots of ladies turn up to do them and I always say that the weather is lovely and they should be outside cycling for real - and they all laugh - I think they think that spin is easier and stuff. Alot of them are just lazy.
I really do think in my head, around here anyway, is that the women you see out on the roads are the serious ones or cycle in groups with the men. I usually only ever see men, if I see women, its mainly on Pendleton shoppers in mint green, popping to the shops with their wooden baskets on the front - and usually older as well.
I also think its the psychology as well, lots of women think you have to be really fit/fast to go out on the roads. You don't at all - it's about enjoying the countryside or surroundings. Plus, they have the idea that drivers (the minority) are idiots...probably and would rather avoid it.
I love my bikes, they give me a sense of escapism - the open road, pubs...cake stops....no limitiations....What is not to love?! When I compete in duathlon, the mix is 70:30 men to women and the men (in a non patronising way) always respect the women for having a go etc.