Livingitup22, how right you are my friend! I don't think its necessary to go on forever. I do think that within the first 1-2 times you go at it with a chick its necessary to beat it till she cant take anymore just to prove your point. But after proving your point, Part of the trick of being good in bed is knowing when to say enough is enough.
Women love the mutual climax thing, I tell every woman Im with it only takes me 5-10 minutes after that Im just going on for her sake. I like to create a signal with each woman to let me know when its ok for me to let it go. I attempt to let it go at the same time she is having her big one. I find most women will signal in the 15-20 minutes range. Some will go to the 30 minutes+ range, by that point Im usually ready to call it quits. Going at it for over 45 minutes, is cool on occasion and only with someone I like a whole lot, but for the most part its really a waste of time for me. honestly, if I don't really care one way or the otehr about a chick, there are alot of times that I just let it go cause shes taking too long.
This chick I was seeing a few months ago was the worst kind. She would scream, "Oh right there Im bout to cvm im bout to cvm," 20 minutes later "im bout to cvm bout to cvm." 45 minutes "im bout to cvm im bout to cvm," an hour oh good grief you get the point