The ummah chose Abu Bakr to lead once Prophet Muhammad sa passed.
and women are treated well in Islam, there are many rights women were given in the Qur'an and sunnah. Khadija was wealthy and the Prophet worked for her before they married. Don't let what the goons of today fool you... Prophet Muhammad was excellent to his wives. He also didn't marry for money if that's what you are implying. In fact, Khadija proposed marriage to him!
For 13 years he was in Mecca preaching to his own clan, Quraysh... and they rejected him. It got to the point he needed to make immigration. His own people even recognized him as trustworthy person but they did not want to hear anything about religion or One God. They got to the point where they wanted to shut him up permanently and he was their target for the rest of his life practically.
And please go up to Muslim women and ask them why the hell are they Muslim since you assume their religion doesn't treat them well. Just go to a masjid, please. Go to a Muslim community area, a university campus... anywhere you can find people who practice and ask them.
Women are entitled to many rights.. esp financially and property wise
http://www.islamswomen.com/articles/do_muslim_women_have_rights.php