Are we supposed to want to be good sexual partners?

I was wondering. Are we supposed to want to be good sexual partners with our spouses? I hear a lot of men complaining that the sex is not where they would like it at, that it was before marriage, but after marriage it was shut down. It sounds like many of them would try almost anything to help restore it. Like they want to learn to better please there mate. There was another thread on the website, and a lady said "why would any woman with 1/4 brain want to become a queen at giving her husband bj?". I mean, the whole point is to pleasure each other right? Is this a common opinion that everyone just wants to think about their own needs and screw the others?

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