Why are mens sports more popular than women sports?

It's been around longer, so more people have watched/played/attended these games. I find it more interesting because I've never even heard of a women's team doing any important things. TO FOLLOW THE ABOVE ANSWER: It's not necesserily importance that comes into the equation, but popularity! Womens rowing teams, gymnastics etc have all done well at the Olympics! Athletes such as Kelly Holmes, double gold medalist at Athens in 2004; or Ellen McArthur who has sailed around the world solo, are all women who should be recognised, and have been for that matter, for what they have achieved! As the twenty first century progresses, the topic of sexism is growing rapidly!