Men are percieved as the more 'sexual' of the genders and are potrayed as such in the media.
But is it reflective of reality or merely a projection of female insecurity?
Biches and whores.
You're making a number of baseless generalisations. Women do think of sex, quite possibly as much as you or me. Now, every person is different some might do more than you or me.
In regards to the magazines, it depends on what you read. Take into account that porn magazines are largely aimed towards male audience. If you look at the articles of male magazines such as Men's health you'll find the same type of shallow 12-year-old-written articles, just with a different focus for male audience.
2a. Men will cheat in that situation rather than break up. Is that better?
2b. No one convinces themselves they're in love for any reason. It just happens.
Angela Lansbury was hot back in the day. Just putting that out there.
Every woman except my momma and your momma loves to screw. Go out and find one.
The media is not a good indication of reality. I do however, agree with your last point on experience.